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4 article(s) from Wang, Qian

Characterization of a new fusicoccane-type diterpene synthase and an associated P450 enzyme

Jia-Hua Huang,
Jian-Ming Lv,
Liang-Yan Xiao,
Qian Xu,
Fu-Long Lin,
Gao-Qian Wang,
Guo-Dong Chen,
Sheng-Ying Qin,
Dan Hu and
Hao Gao

Beilstein J. Org. Chem. 2022, 18, 1396–1402, doi:10.3762/bjoc.18.144

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Figure 1: The five distinct FC-type DTSs and the corresponding products.

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Figure 2: Bioinformatics analysis of the tad cluster. A) Phylogenetic tree of TadA and representative fungal ...

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Figure 3: HPLC–MS analysis of mycelial extracts from A. oryzae NSAR1 transformants. A) The HPLC profiles moni...

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Scheme 1: Biosynthesis of FC-type diterpenoids. A) The biosynthetic pathway of 1, 2 and 4. B) Cyclization mec...

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Published 05 Oct 2022

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Visible-light-mediated copper photocatalysis for organic syntheses

Yajing Zhang,
Qian Wang,
Zongsheng Yan,
Donglai Ma and
Yuguang Zheng

Beilstein J. Org. Chem. 2021, 17, 2520–2542, doi:10.3762/bjoc.17.169

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Scheme 1: Photoredox catalysis mechanism of [Ru(bpy)₃]²⁺.

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Scheme 2: Photoredox catalysis mechanism of Cu^I.

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Scheme 3: Ligands and Cu^I complexes.

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Scheme 4: Mechanism of Cu^I-based photocatalysis.

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Scheme 5: Mechanisms of Cu^I–substrate complexes.

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Scheme 6: Mechanism of Cu^II-base photocatalysis.

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Scheme 7: Olefinic C–H functionalization and allylic alkylation.

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Scheme 8: Cross-coupling of unactivated alkenes and CF₃SO₂Cl.

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Scheme 9: Chlorosulfonylation/cyanofluoroalkylation of alkenes.

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Scheme 10: Hydroamination of alkenes.

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Scheme 11: Cross-coupling reaction of alkenes, alkyl halides with nucleophiles.

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Scheme 12: Cross-coupling of alkenes with oxime esters.

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Scheme 13: Oxo-azidation of vinyl arenes.

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Scheme 14: Azidation/difunctionalization of vinyl arenes.

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Scheme 15: Photoinitiated copper-catalyzed Sonogashira reaction.

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Scheme 16: Alkyne functionalization reactions.

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Scheme 17: Alkynylation of dihydroquinoxalin-2-ones with terminal alkynes.

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Scheme 18: Decarboxylative alkynylation of redox-active esters.

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Scheme 19: Aerobic oxidative C(sp)–S coupling reaction.

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Scheme 20: Copper-catalyzed alkylation of carbazoles with alkyl halides.

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Scheme 21: C–N coupling of organic halides with amides and aliphatic amines.

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Scheme 22: Copper-catalyzed C–X (N, S, O) bond formation reactions.

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Scheme 23: Arylation of C(sp²)–H bonds of azoles.

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Scheme 24: C–C cross-coupling of aryl halides and heteroarenes.

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Scheme 25: Benzylic or α-amino C–H functionalization.

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Scheme 26: α-Amino C–H functionalization of aromatic amines.

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Scheme 27: C–H functionalization of aromatic amines.

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Scheme 28: α-Amino-C–H and alkyl C–H functionalization reactions.

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Scheme 29: Other copper-photocatalyzed reactions.

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Scheme 30: Cross-coupling of oxime esters with phenols or amines.

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Scheme 31: Alkylation of heteroarene N-oxides.

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Published 12 Oct 2021

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Charge-transfer interaction mediated organogels from 18β-glycyrrhetinic acid appended pyrene

Jun Hu,
Jindan Wu,
Qian Wang and
Yong Ju

Beilstein J. Org. Chem. 2013, 9, 2877–2885, doi:10.3762/bjoc.9.324

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Scheme 1: Reagents and reaction conditions: (a) 4-dimethylaminopyridine (DMAP), 1-ethyl-3-(3-dimethylaminopro...

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Figure 1: (a) GA-pyrene (3) and TNF (4, 1:1, molar ratio, [3] = 12 mM) in DMSO/water (3:1, v/v). The red inso...

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Figure 2: T_gel of GA-pyrene (3) and TNF (4, 1:1, molar ratio) with the increasing concentration in different ...

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Figure 3: T_gel of all the CT gels of GA-pyrene (3, 0.6 g/100 mL) with TNF (4) in varying ratios.

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Figure 4: Scanning electron micrographs of CT xerogels (3 and 4, 1:1, molar ratio, [3] = 9 mM) in DMSO/water ...

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Figure 5: Optical micrographs (20 × 20) of CT xerogels (3 and 4, 1:1, molar ratio, [3] = 9 mM) in (a) DMSO/wa...

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Figure 6: CD spectra of sol in CH₂Cl₂, and CT gel obtained from DMF/water (3:1, v/v), DMSO/water (3:1, v/v), ...

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Figure 7: (a) UV–vis, (b) transmittance at 700 nm, (c) fluorescence intensity at 498 nm (excitation: 365 nm) ...

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Figure 8: Variable temperature ¹H NMR (400 MHz) of CT gel (3 and 4, 1:1, molar ratio) in DMSO/D₂O (3:1, v/v)....

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Published 16 Dec 2013

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Supramolecular FRET photocyclodimerization of anthracenecarboxylate with naphthalene-capped γ-cyclodextrin

Qian Wang,
Cheng Yang,
Gaku Fukuhara,
Tadashi Mori,
Yu Liu and
Yoshihisa Inoue

Beilstein J. Org. Chem. 2011, 7, 290–297, doi:10.3762/bjoc.7.38

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Scheme 1: Biphenyl-capped (5), naphthalene-capped (6), and naphthalene-appended γ-cyclodextrin (7).

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Figure 1: UV–vis spectral changes of 0.2 mM AC upon increasing the concentration of 7 in pH 9 phosphate buffe...

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Figure 2: Circular dichroism spectra of 7 (0.2 mM) in the presence of 0, 0.0083, 0.025, 0.048, 0.071, 0.093, ...

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Figure 3: Circular dichroism spectra of 6 (0.2 mM) in the presence of 0, 0.0083, 0.025, 0.048, 0.071, 0.093, ...

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Figure 4: UV–vis spectra of AC (black dashed line) and 7 (red dashed line) and fluorescence spectra of 7 (0.0...

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Published 07 Mar 2011

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