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Search for "p-terphenyl" in Full Text gives 5 result(s) in Beilstein Journal of Organic Chemistry.
Isolation and biosynthesis of daturamycins from Streptomyces sp. KIB-H1544
Beilstein J. Org. Chem. 2022, 18, 1009–1016, doi:10.3762/bjoc.18.101
- Chinese Academy of Sciences, Beijing 100049, China 10.3762/bjoc.18.101 Abstract Two novel diarylcyclopentenones daturamycin A and B (1 and 2), and one new p-terphenyl daturamycin C (3), along with three known congeners (4–6), were isolated from a rhizosphere soil-derived Streptomyces sp. KIB-H1544. The
- daturamycins was identified through gene knockout and biochemical characterization experiments and the biosynthetic pathway of daturamycins was proposed. Keywords: biosynthesis; diarylcyclopentenone; polyporic acid synthetase; p-terphenyl; Streptomyces; Introduction Natural products containing a terphenyl
- skeleton exhibit a large number of structural diversity due to the differences of the center ring and the connection among rings. Structurally, most natural terphenyls are p-terphenyl derivatives consisting of a C-18 tricyclic or polycyclic C-18 aromatic skeleton. Diarylcyclopentenones, which possess a
Recent advances in the syntheses of anthracene derivatives
Beilstein J. Org. Chem. 2021, 17, 2028–2050, doi:10.3762/bjoc.17.131
- aromatic ketones (Scheme 27) [61]. The authors coupled acetophenone derivatives 116 and 1,4-benzenediboronates 117 at a 2:1 ratio, to obtain p-terphenyl derivatives 118. In the second step, the conversion of the acetyl group of compounds 118 to an ethynyl group afforded diethynylterphenyls 119. In the last
Scalable synthesis of 5,11-diethynylated indeno[1,2-b]fluorene-6,12-diones and exploration of their solid state packing
Beilstein J. Org. Chem. 2014, 10, 2122–2130, doi:10.3762/bjoc.10.219
- Kitamura gave tetrahalide 12 in good yield on >10 g scale [25]. Suzuki cross-coupling with 12 furnished p-terphenyl 14, followed by oxidation of the methyl groups to produce diacid 15. Intramolecular Friedel–Crafts acylation then afforded 5,11-dibromo-IF-dione 11. The yields for the Sonogashira cross
Synthesis of rigid p-terphenyl-linked carbohydrate mimetics
Beilstein J. Org. Chem. 2014, 10, 1749–1758, doi:10.3762/bjoc.10.182
- . Unnatural divalent rigid p-terphenyl-linked C-aryl glycosides with 2.0 nm dimension are available using Suzuki cross-couplings. The key compound, a p-bromophenyl-substituted 1,2-oxazine, was prepared by a stereoselective [3 + 3]-cyclization of a D-isoascorbic acid-derived (Z)-nitrone and lithiated TMSE
- -couplings to form biphenyl aminopyran or p-terphenyl-linked dimers. Hydrogenolysis afforded new unnatural aminosugar mimetics. Zinc in the presence of acid or samarium diiodide were examined for the N–O bond cleavage in order to obtain the rigid p-terphenyl-linked C-glycosyl dimers. Keywords: carbohydrate
- synthesis of divalent compounds 1 with p-terphenyl spacers and of β-D-2-aminotalose- or β-D-2-aminoidose-configured carbohydrate mimetics 2 (Scheme 1). These novel carbohydrate mimetics represent unique structures, combining the features of C-aryl-glycosides and aminosugars. The p-bromophenyl-substituted
Rapid pseudo five-component synthesis of intensively blue luminescent 2,5-di(hetero)arylfurans via a Sonogashira–Glaser cyclization sequence
Beilstein J. Org. Chem. 2014, 10, 672–679, doi:10.3762/bjoc.10.60
- recorded in dichloromethane and the fluorescence quantum yields Φf were determined with coumarin 1 or p-terphenyl as references (Table 2). The most furans display intense, broad absorption bands between 321 and 358 nm with molar extinction coefficients between 21000 to 35000 L/mol cm−1. In addition
- (22000). Fluorescence (CH2Cl2): λmax: 358 nm. Stokes shift Δ = 3800 cm−1. Quantum yield: Φf = 83% (Ref.: p-terphenyl (Φf = 93% in cyclohexane)). Cyclic voltammetry (CH2Cl2): E1/20/+1 = 1.25 V. Compounds 2d (solid and THF solution) and 2n (solid and THF solution) (from left to right) under daylight (top
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