Synthesis of novel 1,2,4-oxadiazole-isoxazoline hybrids and their in silico potential with adenosine receptors

• Pshtiwan S. Mohammed,
• Mohammed K. S. Dalo,
• Onur C. Yazıcı,
• Muhammet Yildirim and
• Akın Sağırlı

Beilstein J. Org. Chem. 2026, 22, 1033–1047, doi:10.3762/bjoc.22.82

• ][9][10][11][12][13]. A notable therapeutic application is found in Ataluren®, a drug for for the treatment of Duchenne Muscular Dystrophy (DMD), which features a 1,2,4-oxadiazole scaffold [14] (Figure 1). In addition to oxadiazoles, numerous five-membered O,N-containing heterocycles have been

• optimal reaction conditions. A series of experiments was carried out by varying the equivalents of 2e (1.2–1.5 equiv), 6d (1.0–1.5 equiv), sodium hypochlorite (1.6–20 equiv), and triethylamine (1.2–2.4 equiv) (Table 2). In addition, control reactions employing either triethylamine or sodium hypochlorite

• (6i) proceeded efficiently, delivering good to high yields across the examined substrates (Table 4, entries 16–20). In addition, reactions of p-trifluoromethylbenzaldoxime (2i) with vinyl-1,2,4-oxadiazoles 6 provided the desired products in moderate to good yields (52–78%) (Table 4). Cycloadditions

Semisynthesis, characterisation, and antibacterial evaluation of a novel lecanoric acid-derived amide library

• Ethan D. Abbott,
• Sasha Hayes,
• Jonathan M. White,
• Bernd H. A. Rehm and
• Rohan A. Davis

Beilstein J. Org. Chem. 2026, 22, 1023–1032, doi:10.3762/bjoc.22.81

• methylene groups (δC 38.1, 37.1), one aliphatic methine carbon (δC 25.2), and one carbonyl carbon (δC 167.7). The presence of phenols in 6 was supported by a bathochromic shift of the UV spectrum upon addition of base (NaOH) [25][26]. One spin system was identified from the COSY spectrum, which was the

• (15 µL) were loaded prior to the addition of bacteria. The plates were incubated for 24 h at 37 °C in static conditions. The effects of the compounds at 50 µM on bacterial growth and viability of biofilm bacteria were determined by the OD600 and resazurin metabolic assay, respectively. The final

Synthesis and optical resolution of 4,5-diaminohomoadamantane: a promising scaffold for chiral ligands and bioactive compounds

• Polina A. Man’kova,
• Vadim A. Shiryaev,
• Olga S. Podlipnova,
• Marat M. Khisyamov,
• Dmitry S. Nikerov,
• Alexander N. Reznikov and
• Yuri N. Klimochkin

Beilstein J. Org. Chem. 2026, 22, 1013–1022, doi:10.3762/bjoc.22.80

• based on a rigid polycyclic framework such as homoadamantane remain underexplored. We anticipated that the unique steric and lipophilic properties of chiral trans-4,5-diaminohomoadamantane could provide the necessary stereoinduction in metal-catalyzed asymmetric reactions. In addition, such structures

Rh(III)-catalyzed chelation-assisted C–H activation/annulation of 2-arylimidazolines with cyclic diazo-1,3-dicarbonyl compounds: a novel approach to tetracyclic annulated derivatives of 2,3-dihydroimidazo[2,1-a]isoquinoline

• Ivan Lyutin,
• Grigory Kantin,
• Olga Bakulina and
• Dmitry Dar'in

Beilstein J. Org. Chem. 2026, 22, 997–1003, doi:10.3762/bjoc.22.78

• methylene group of the dimedone moiety at 4.18 ppm with both protons from the methylene group of the imidazoline moiety at 2.55 and 3.60 ppm was observed for the major isomer 4g. Next, the scope of suitable diazo carbonyl compounds was examined. In addition to dimedone, 1,3-cyclohexanedione and its 5-phenyl

The role of spacer length and flexibility in peptide self-assembly

• Julian Link,
• Albin Lahu,
• Manfred Wagner,
• Tanja Weil and
• David Y. W. Ng

Beilstein J. Org. Chem. 2026, 22, 986–996, doi:10.3762/bjoc.22.77

• primarily driven by hydrophobic interactions of the π-block and supported by peptide–peptide interactions. In addition, the investigated spacers were limited to relatively short, hydrophobic aliphatic chains. Future work could expand these design principles by exploring longer peptide sequences as well as a

• reaction mixture was drained, the Fmoc group was removed as described before and washed three times with DMF. The following coupling steps were performed in the same way. The final deprotection was performed via addition of a solution of 8% piperidine (DMF, 2.1 mL) for 80 s at 110 °C. The resin solvent was

• dryness and redissolving the residue in the same volume of D2O. Dimethyl sulfone (DMS, 6.96 mg) was added as an internal reference. Each peptide conjugate was initially dissolved in TFE-d3, followed by the addition of the DMS-containing PBS/D2O buffer (250 µL) and additional PBS/D2O buffer without DMS to

Novel macrocycles: from synthesis to supramolecular function

• Veronica Iuliano,
• Carmen Talotta,
• Margherita De Rosa,
• Paolo Della Sala,
• Konrad Tiefenbacher,
• Pablo Ballester and
• Carmine Gaeta

Beilstein J. Org. Chem. 2026, 22, 982–985, doi:10.3762/bjoc.22.76

• cells. In addition to its intrinsic biological activity, the nanoassembled platform may also serve as a carrier for combination therapies by encapsulating additional therapeutic agents. Macrocyclic chemistry is proving equally vital for environmental sustainability and separation science. For instance

• binding affinity and selectivity that depended on the presence of Lys121. Structural investigations revealed an unexpected binding mode in which, in addition to the peptide-mediated recognition of the BIR domain, the tweezer scaffold established supplementary interactions with the protein surface. These

Electrochemical reduction of unsaturated carbon–carbon bonds via 3d transition-metal catalysis

• Geon Kang,
• Minki Jeon,
• Pooja Kumari Jat,
• Cheoljae Kim and
• Isaac Choi

Beilstein J. Org. Chem. 2026, 22, 955–981, doi:10.3762/bjoc.22.75

• controlled syn-addition pathway that furnishes Z-alkenes [10], whereas Birch-type reductions via single-electron transfer (SET) promote an anti-addition process that enables the formation of E-alkenes [11][12]. Beyond the classical strategies, recent advances have enabled the highly efficient chemo- and

• governed primarily by bond dissociation free energies, radical stabilization, and cage escape or recombination kinetics, rather than by inner-sphere insertion chemistry. In addition, in certain systems, hydride transfer can operate as a distinct mechanistic mode, wherein the M–H unit directly delivers a

• through a silane-mediated hydrogen-transfer pathway, thereby circumventing the direct use of water in hydrogen-transfer processes. Notably, the addition of a catalytic amount of a nickel complex was found to improve the reaction efficiency, which is attributed to the electroreductive generation of a Ni(0

Synthesis of sterically shielded piperidine nitroxides via acid-catalyzed heterocyclization of β-aminoketone derivatives with ketones

• Mark M. Gulman,
• Yurii I. Glazachev and
• Sergey A. Dobrynin

Beilstein J. Org. Chem. 2026, 22, 948–954, doi:10.3762/bjoc.22.74

• -tetrapropyl-substituted piperidine nitroxides, and sterically shielded nitroxides with functional groups in the side chain of the heterocycle. Results and Discussion Aminodioxolanes 4a,b were obtained from enones 1a,b via a modified literature sequence [30] involving phthalimide Michael addition, dioxolane

• , characteristic signals of the dioxolane fragment protons (multiplet, 3.72–3.79 ppm, 4H) and an isolated methyl group (singlet, 1.13 ppm, 3H) were observed. The NH2 protons appeared as a broad signal at 1.77–1.89 ppm. In addition, an eight-spin system comprising the ethyl group resonances (0.71, 1.13, 1.19 ppm

• nucleophilic addition [34][35]. Conversely, less basic organometallic reagents, such as vinylmagnesium bromide [34], ethynylmagnesium bromide [23], or allylmagnesium chloride [36], readily undergo addition, yielding the corresponding nitroxides. Ketonitrone 6a was treated with various alkynylmagnesiun bromides

Recent advances in copper-catalyzed direct hydroamination of alkenes with (hetero)aromatic amines

• Hyejeong Lee and
• Yunmi Lee

Beilstein J. Org. Chem. 2026, 22, 925–947, doi:10.3762/bjoc.22.73

• , including copper–amido-mediated nucleophilic addition or aminocupration, Lewis acid-type alkene activation, and radical-mediated pathways. These complementary mechanisms provide access to diverse alkene classes with control over regioselectivity (Markovnikov vs anti-Markovnikov addition), stereoselectivity

• , and functional group tolerance. This review summarizes recent advances in the copper-catalyzed hydroamination of alkenes with (hetero)aromatic N–H nucleophiles, emphasizing the mechanistic paradigms and the factors governing selectivity. Keywords: aromatic amines; aza-Michael addition; Cu catalysis

• remains a primary objective of modern organic synthesis [5][6]. Among the diverse strategies available for C–N bond formation, the direct addition of an N–H bond across a C–C double bond, known as hydroamination, is an ideal transformation considering atom and step economy [7][8][9][10][11][12

A practical CO₂-mediated synthesis of 5,6-carboxylated silicon-rhodamines for targeted probe development

• Dongjie Hou,
• Shaowei Wu,
• Ning Xu,
• Pengjun Bao,
• Wenhao Jia,
• Qinglong Qiao and
• Zhaochao Xu

Beilstein J. Org. Chem. 2026, 22, 915–924, doi:10.3762/bjoc.22.72

• readily available CO2, this method delivers carboxylated SiR derivatives in 60–93% yields while avoiding the use of t-BuLi, toxic CO, and expensive palladium catalysts. In addition, the crude carboxylation mixtures can be directly subjected to amide coupling without chromatographic purification, enabling

• makes SiRs highly attractive as fluorogenic probes for precise super-resolution imaging by enabling target-specific recognition and significantly improving signal-to-noise ratio (SNR). In addition, hydroxymethyl-substituted SiR derivatives, including HMSiR [30][31] and Aze-HMSiR [32][33][34], can

• the near-infrared region, reaching up to 740 nm [21][22][40]. In addition, modulation of the L–Z equilibrium through tuning of N-substituents has enabled the development of fluorogenic and spontaneously blinking SiR probes with finely controlled off–on behavior [11][26][28][41]. However, despite the

Palladium-catalyzed benzocyclization reactions of quinoline-2-carboxamides via sequential C–H/N–H functionalization

• Shoichi Sugita,
• Kentaro Okano and
• Atsunori Mori

Beilstein J. Org. Chem. 2026, 22, 905–914, doi:10.3762/bjoc.22.71

• were observed in the reactions involving 2-bromo-1-iodo-4-methoxybenzene (2f) and 1-bromo-2-iodo-4-methoxybenzene (1g) (Table 3, entries 5 and 6). The oxidative addition of the palladium catalyst to the C–I bond in these electron-donating group-containing bromo(iodo)benzenes occurred slowly, requiring

• an inhibition of the catalyst’s oxidative addition to the C–I bond. Notably, the substrates containing electron-withdrawing groups, such as cyano or nitro groups, resulted in low yields, even after longer reaction times (Table 3, entries 7 and 8). These results were attributed to homo-coupling of 1

• . First, the activated palladium(0) catalyst is inserted into the carbon–iodine bond of the 1-bromo-2-iodoarene 2 via oxidative addition. The intermediate Int-2 then undergoes ligand exchange from iodine and phosphine to acetate and quinoline-2-carboxamide to generate intermediate Int-3. Then, through a

Cascade transformation of 2-(diazoacetyl)-2H-azirines to 2-aroyl-3-hydroxy-1H-pyrroles via condensation with aromatic aldehydes

• Timur O. Zanakhov,
• Ekaterina E. Galenko,
• Mikhail S. Novikov and
• Alexander F. Khlebnikov

Beilstein J. Org. Chem. 2026, 22, 897–904, doi:10.3762/bjoc.22.70

• Information File 1). In the 1H NMR spectrum of the crude compound 4b, in addition to the signals of the main isomer 4b, there is a set of low-intensity proton signals: 1.34 (d), 2.59 (d), 3.27 (s), 5.16 (s), formally corresponding to the set of signals of the main diastereoisomer 4b: (1.26 (d), 2.85 (d), 3.24

• F requires overcoming an excessively high energy barrier, so the conversion of intermediate E to intermediate F or directly to H apparently occurs via proton elimination/addition. The elimination of a nitrogen molecule from intermediate H is accompanied by the opening of the 6-membered ring and

Chiral cyclopropenimine-catalyzed enantioselective Michael reactions of phenol and benzofuran-derived α,β-unsaturated pyrazolamides with benzophenone-imine of glycine esters

• Ya Bai,
• Xue-Ying Wang,
• Si-Kai Zhu,
• Yan-Ting Shen,
• Sheng-Yong Zhang and
• Ping-An Wang

Beilstein J. Org. Chem. 2026, 22, 888–896, doi:10.3762/bjoc.22.69

• adjacent stereocenters, which was obtained from in-situ acidic hydrolysis and lactamization of the corresponding Michael product. Keywords: α,β-unsaturated pyrazolamide; chiral cyclopropenimine; glutamic acid; lactamization; Michael addition; Introduction Phenols and benzofurans are feedstock chemicals

• anti-form of 6a. With mode B, the π–π stacking between benzophenone-imine 2a and the phenoxylmethyl group in 5a may enhance the ratio of this attack to produce the syn-form of 6a as major product. A mechanism for this highly enantioselective Michael addition between 2a and 5a was proposed based on

• -disubstituted glutamic and pyroglutamic acid esters by this protocol are underway. Experimental General procedure for the CSB-1-catalyzed Michael addition of compounds 2 and 5 To 2a (1.0 mmol) and 5a (1.0 mmol) in EtOAc (10.0 mL) was added CSB-1 (0.2 mmol) and the mixture was stirred at rt for 18 h. After the

Diastereodivergent electrophilic trapping of α-boryl lithium derivatives

• Tereza Pavlíčková,
• Noam Orbach and
• Ilan Marek

Beilstein J. Org. Chem. 2026, 22, 882–887, doi:10.3762/bjoc.22.68

• confirmed due to the inability to obtain suitable crystals for X-ray analysis. In addition to the nucleophilic substitution of the boryl lithium species with R3SiCl, a small range of alternative electrophiles was examined (Scheme 3). Incorporation of a tin-based electrophile furnished stannane 6i in

Site-specific labelling of native peptides and proteins: chemical and enzymatic strategies

• Antonio Angelastro,
• Jonathan Bargh,
• Subhajit Guria,
• Victor Laserna and
• Louis Luk

Beilstein J. Org. Chem. 2026, 22, 857–881, doi:10.3762/bjoc.22.67

• product can be reacted with hydroxylamine-containing payloads to afford oxime-linked conjugates (Scheme 3c) [29][30]. Additionally, dibromomaleimides 8 [31][32] and dibromopyridazinediones 9 (Scheme 3d) [33] bearing payloads at the N-position can rebridge cysteines through an addition–elimination

• mechanism. These reagents have been extensively explored for protein conjugates, especially as ADCs [34]. Similarly, divinylpyrimidines 10 [35] and arylenedipropiolonitriles 11 [36] have also been investigated for analogous purposes but via a conjugate addition mechanism (Scheme 3e). Exploiting the unique

• oxidation state of phosphorous, diethynylphosphonites 12 also utilize conjugate addition to provide a versatile three-point conjugation platform [37]. Related technologies have been adapted to link multiple disulfide residues simultaneously. Using bis-dibromopyridazinediones bis-9 [38] or bis/tetra

The trans-influence in gold chemistry from a catalytic perspective

• Manfred Bochmann

Beilstein J. Org. Chem. 2026, 22, 838–856, doi:10.3762/bjoc.22.66

• ^C^N complex 12 (H trans to C) is stable in THF solution at −20 °C but decomposes at room temperature. This instability of 12 may in part also be due to the tendency of the pyridine arm to dissociate; for example, on addition of LiHBEt3 the pyridine is displaced to give the dihydrido complex Li[(N–C

• into M–H or M–C are a mainstay of homogeneous catalysis. Alkyne insertion by a migratory insertion process leads to cis-addition. By contrast, insertions of alkyne into Au–H bonds result in anti (trans)-addition products, which cannot readily be explained by the conventional migratory pathway. To the

• complexes of type 8 can react with acetylenes slowly, in a possibly light-induced radical reaction [49]. The addition of radical initiators such as azobis(isobutyronitrile) (AIBN) reduced the reaction times from days to minutes, with quantitative and completely stereoselective formation of Z-vinyl gold

Unsymmetrical sulfoxides with sterically hindered catechol fragment: synthesis, structure, electrochemical properties, and antiradical activity

• Daria A. Burmistrova,
• Vasiliy A. Fokin,
• Oleg P. Demidov,
• Mikhail A. Kiskin,
• Maxim V. Arsenyev,
• Andrey I. Poddel’sky,
• Nadezhda T. Berberova and
• Ivan V. Smolyaninov

Beilstein J. Org. Chem. 2026, 22, 828–837, doi:10.3762/bjoc.22.65

• , and antibacterial agents [6][7][8]. However, the practical utility of such type of compounds extends beyond biomedical applications. For instance, Michael addition reactions between dithiols and phenolic compounds yield cross-linked, colorless polymer films with universal adhesion and high stability

• ). Addition of the target catechols to a DPPH radical solution leads to a decrease in absorbance at the 517 nm maximum. The antiradical activities of CatH2-S-R and CatH2-SO-R were evaluated through the determination of IC50 and the time to reach the steady-state equilibrium (TEC50) values, together with the

Total synthesis of the capsular polysaccharide repeating unit towards the development of a glycoconjugate vaccine against Klebsiella pneumoniae ST512

• Shuo Zhang,
• Ondřej Daněk and
• Peter H. Seeberger

Beilstein J. Org. Chem. 2026, 22, 821–827, doi:10.3762/bjoc.22.64

• repeating unit {3)-[α-ʟ-Rhap-(1→4)]-α-ᴅ-GalpA-(1→2)-α-ʟ-Rhap-(1→2)-α-ʟ-Rhap-(1→2)-α-ʟ-Rhap-(1→3)-β-ᴅ-Galp-(1→}n (Figure 1) [13]. The chemical synthesis of this molecule is challenging due to the stereoselective formation of the 1,2-cis glycosidic linkage on the galacturonic acid core. In addition, the

Synthesis and structural elucidation of a novel bis-spirooxindole from isatin and ethylenediamine

• Irene Moreno-Gutiérrez,
• Josefa L. López-Martínez,
• Sonia Berenguel-Gómez,
• Irene Torres-García,
• Duane Choquesillo-Lazarte,
• Manuel Muñoz-Dorado,
• Miriam Álvarez-Corral and
• Ignacio Rodríguez-García

Beilstein J. Org. Chem. 2026, 22, 813–820, doi:10.3762/bjoc.22.63

• single-crystal X-ray diffraction. In addition, the isolated diiminoisatin can be independently reduced to the same bis-spirooxindole. These results broaden the scope of isatin–diamine condensations and demonstrate their potential to generate structurally complex spirooxindole architectures under simple

• NaBH4 or by the ethylenediamine acting as a hydride donor. In addition, if the formation of 28 by addition of the enol of 27 to the imine were reversible (and the reduction step irreversible), then the more stable, dipole-opposed C2-symmetric structure for 28 should be dominant, thus explaining the

Knoevenagel condensation of 4,5- and 1,8-diazafluorenes

• Darya S. Cheshkina,
• Christina S. Becker,
• Alina A. Sonina and
• Maxim S. Kazantsev

Beilstein J. Org. Chem. 2026, 22, 803–812, doi:10.3762/bjoc.22.62

• cases when the condensation product precipitated from the reaction mixture (see note d in Table 1), i.e., when the reaction became irreversible. The proposed mechanism for the condensation reaction in the presence of ammonium acetate is shown in Scheme 2 [25]. Accordingly, the addition of diazafluorene

• ). Contrary, both the neutral (2) and protonated (2A’) forms of 1,8-diazafluorene were identified in both solvents (see Supporting Information File 1, Figure S2) with relatively high ratio (2 to 2A’ = 1:0.4 in CD3OD and 1:0.9 in CD3COOD). This equilibrium was reached immediately after the addition of the acid

• the protonation and subsequent addition of a nucleophile (H2O) an intramolecular rearrangement facilitated by the proximity of a neighboring nitrogen atom (in position 1 or 8) occurred (see Scheme 3). Elimination of the aldehyde leads to the formation of 1,8-diazafluorene (2), which can be oxidized

Synthetic study of vic-bromination of diarylacetylenes, easy purification and separation

• Akane Togo,
• Hiyono Suzuki,
• Yuto Akai,
• Makoto Matsumoto,
• Yoshinori Suzuma,
• Hidehiko Kodama and
• Kouichi Matsumoto

Beilstein J. Org. Chem. 2026, 22, 795–802, doi:10.3762/bjoc.22.61

• -osaka, Osaka 577-0056, Japan 10.3762/bjoc.22.61 Abstract E-Selective bromination for diphenylacetylene was established by using the combination of NBS and FeBr3 in CH2Cl2. In addition, easy purification and separation from the crude product were found. When the crude product was treated with heptane

• ; Introduction The addition reaction of bromine to diphenylacetylene is one of basic reactions and is recognized as important, because resulting 1,2-dibromo-1,2-diphenylethylene can serve as a precursor for various molecular transformations in organic synthesis [1][2]. This reaction seems to be simple, but some

• synthesis. In addition, we have found an easy purification and separation method of E and Z isomers of the crude product by using heptane. The method utilizes the difference in solubility of E and Z isomers. Because of this technique, the purification, separation, and scale-up were easy to perform. In this

Halogenated azobenzene acrylates: from efficient solution photoswitching to stable solid-state photochromic materials

• Martina Vachtlová,
• Michaela Fecková,
• Vítězslav Zima,
• Jan Podlesný,
• Milan Klikar,
• Oldřich Pytela,
• Patrik Pařík,
• Jakub Opršal,
• Eliška Juhaňáková,
• Veronika Chrtová and
• Filip Bureš

Beilstein J. Org. Chem. 2026, 22, 782–794, doi:10.3762/bjoc.22.60

• agreement with literature data showing that anisole- and methoxyarene-type systems typically undergo an initial oxidation of the alkoxyaryl unit [29][30][31]. In addition, possible oxidation involving the aryl halide moiety generally requires a more positive potential [28]. Taken together, these data

Design, synthesis, and biological evaluation of FXR/ASK1 dual-target modulators

• Xi Zhang,
• Jingyan Wang,
• Ziqiang Zhao,
• Caiyi Wang,
• Zenghui Ye,
• Wei-Yuan Ma,
• Jian-Xing Xu and
• Fengzhi Zhang

Beilstein J. Org. Chem. 2026, 22, 771–781, doi:10.3762/bjoc.22.59

• -luciferase reporter assay in CHO cells cultured for 24 hours following addition of GW4064 and test compounds. Compared to the control group, **p < 0.01 and ns indicate no significant difference, with control; DMSO serving as the control group. ASK1 inhibition of all compounds. Results of the ADP-Glo™ kinase

Preparation of 3-(alkylamino)imidazo[1,2-a]pyridine-2-carbaldehydes via Kornblum oxidation and unexpected ring-opening reactions of the corresponding alcohols under oxidative conditions

• Sandile J. Mkhize,
• Memory Zimuwandeyi,
• Manuel A. Fernandes,
• Amanda L. Rousseau and
• Moira L. Bode

Beilstein J. Org. Chem. 2026, 22, 763–770, doi:10.3762/bjoc.22.58

• esters, had been obtained from 2-aminopyridines 9a–d while no reaction was observed for 2-aminopyridine 9e (Scheme 1). We reasoned that at the relatively small scale of the reaction (≈350 mg aminopyridine) and because a period of 30 min stirring of all reactants had been allowed prior to addition of the

• taken place before addition of the other reagents. Increasing the amount of acid catalyst to 0.2 equiv significantly increased the yield of the ester products 13, although the yields were still modest (Table 1). A further increase to 0.3 equiv of acid catalyst did not lead to further yield improvement

Synthesis and biological evaluation of new brassinosteroid analogs with C-22 benzoate function

• María Núñez,
• Camila Escobar,
• Mario Párraga,
• Mauricio Soto,
• Luis Espinoza-Catalán,
• Katy Díaz and
• Andrés F. Olea

Beilstein J. Org. Chem. 2026, 22, 753–762, doi:10.3762/bjoc.22.57

• in Table 2. The data indicate that derivatives with a OH group at C-3 (TE analogs) are much more active than derivatives with a carbonyl group in this position (3-DT analogs). However, the addition of another OH group at C-2 (CAT analogs) increases the activity of analogs substituted with p-methyl

• complex mixture of proteins. In addition, it is possible to quantify their expression by using suitable primary and secondary antibodies to visualize it. It has been established that the dephosphorylated forms of BZR1 and BES1, and their concomitant accumulation in the nucleus, control the activity in the

• . However, it seems that on the signaling cascade this structural effect is lost, and the outcome do not follow the initial pattern. It is known that plant cells can synthesize most hormones and, therefore their regulation is decentralized. In addition, each hormone modulates its own synthesis, degradation