Výsledky vyhledávání - "Shi‐Hai Xu"

Akademický článek

New Furan and Cyclopentenone Derivatives from the Sponge-Associated Fungus Hypocrea Koningii PF04

Autor: Li-Jian Ding, Bin-Bin Gu, Wei-Hua Jiao, Wei Yuan, Ying-Xin Li, Wei-Zhuo Tang, Hao-Bing Yu, Xiao-Jian Liao, Bing-Nan Han, Zhi-Yong Li, Shi-Hai Xu, Hou-Wen Lin

Publikováno v: Marine Drugs, Vol 13, Iss 9, Pp 5579-5592 (2015)

Two new furan derivatives, hypofurans A and B (1 and 2), and three new cyclopentenone derivatives, hypocrenones A–C (3–5), along with seven known compounds (6–12), were isolated from a marine fungus Hypocrea koningii PF04 associated with the sp

Externí odkaz: https://doaj.org/article/7d6a5963aafe4d07bd93dbf905a33050

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Akademický článek

A New 1,4-Diazepine from South China Sea Marine Sponge Callyspongia Species

Autor: Shi-Hai Xu, Xianwen Yang, Kyung Jin Lee, Tunhai Xu, Xue-Feng Zhou, Wei Ma, Jun-De Dong, Ri-Ming Huang, Yonghong Liu

Publikováno v: Molecules, Vol 15, Iss 2, Pp 871-877 (2010)

A new 1,4-diazepine, callysponine (1), was isolated from a South China Sea Callyspongia sp. marine sponge, together with four known proline-based diketopiperazines: cyclo-(S-Pro-R-Leu) (2), cyclo-(S-Pro-R-Val) (3), cyclo-(S-Pro-R-Ala) (4), andcyclo-(

Externí odkaz: https://doaj.org/article/1d5be72e9dbe4853be310e83e71b888d

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Akademický článek

2-Carbamoyl-3,4,5,6-tetrafluorobenzoic acid

Autor: Tao Lu, Xiao-Jian Liao, Yuan-Wei Liang, Shi-Hai Xu

Publikováno v: Acta Crystallographica Section E, Vol 68, Iss 10, Pp o2864-o2864 (2012)

In the title compound, C8H3F4NO3, the carboxy group lies nearly in the plane of the ring with a C—C—C—O torsion angle of −10.5 (4)°. The carbamoyl group is almost perpendicular to the benzene ring [C—C—C—O torsion angle = 82.2 (4) °].

Externí odkaz: https://doaj.org/article/d27773adad2248e38bb6f9e3f2d6baf2

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Akademický článek

N-Methyl-l-leucyl-l-leucine hydrochloride monohydrate

Autor: Tao Lu, Mu-Wu Xu, Xiao-Jian Liao, Shi-Hai Xu

Publikováno v: Acta Crystallographica Section E, Vol 67, Iss 9, Pp o2394-o2394 (2011)

In the title compound C13H27N2O3+·Cl−·H2O, obtained by deprotecting the amino and carboxyl groups of an intermediate in the synthesis of the cyclic pentapeptide Galaxamide, a number of hydrogen-bonding interactions occur including aminium N—H..

Externí odkaz: https://doaj.org/article/c7f8699538e44b828cce9ea472d4aa88

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Akademický článek

2-Amino-3,4,5,6-tetrafluorobenzoic acid

Autor: Xiao-Jian Liao, Wei Guo, Shi-Hai Xu

Publikováno v: Acta Crystallographica Section E, Vol 67, Iss 7, Pp o1732-o1732 (2011)

The asymmetric unit of the title compound, C7H3F4NO2, obtained as an intermediate in the synthesis of a coupling reagent, contains four independent and conformationally similar molecules. The amine H atoms form both intramolecular and intermolecular

Externí odkaz: https://doaj.org/article/cf016f80b8734a18a04af95922458f78

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Akademický článek

Methyl 2-amino-3,4,5,6-tetrafluorobenzoate

Autor: Wei Guo, Xiao-Jian Liao, Guo-Qiang Li, Shi-Hai Xu

Publikováno v: Acta Crystallographica Section E, Vol 67, Iss 6, Pp o1511-o1511 (2011)

In the title compound, C8H5F4NO2, synthesized by esterification of 2,3,4,5-tetrafluoroanthranilic acid with methanol, an intramolecular amine N—H...Ocarbonyl hydrogen bond is present, while intermolecular N—H...O hydrogen bonds produce chains in

Externí odkaz: https://doaj.org/article/b0080e04d8be467cb8c8d60e8bec5a59

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Akademický článek

catena-Poly[[[tetraaquaerbium(III)]-μ-oxalato-κ4O1,O2:O1′,O2′] [bromidobis(pyrazine-2-carboxylato-κ2N1,O)cuprate(II)] tetrahydrate]

Autor: Hui-Fu Yang, Shi-Hai Xu

Publikováno v: Acta Crystallographica Section E, Vol 66, Iss 8, Pp m874-m875 (2010)

In the title heterometallic complex, {[Er(C2O4)(H2O)4][CuBr(C5H3N2O2)2]·4H2O}n, the ErIII atom is eight-coordinated by four O atoms from two centrosymmetric oxalate ligands and four water molecules, displaying a bicapped trigonal-prismatic geometry.

Externí odkaz: https://doaj.org/article/e797129079044ca3a1af3213fcb8509a

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Akademický článek

Aqua(2-oxido-2,2-diphenylacetato-κ2O1,O2)(1,10-phenanthroline-κ2N,N′)copper(II)

Autor: Xiao-Xia Yang, Fu-Yong Zhang, Shi-Hai Xu

Publikováno v: Acta Crystallographica Section E, Vol 66, Iss 1, Pp m69-m69 (2010)

In the title mononuclear complex, [Cu(C14H10O3)(C12H8N2)(H2O)], the CuII atom is five-coordinated by two N atoms from a 1,10-phenanthroline (phen) ligand, two O atoms from a benzilate ligand and one O atom from a water molecule in a distorted square-

Externí odkaz: https://doaj.org/article/56b11d7bfb8c41af943870cffe2210a4

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