METHYL 2-ALPHA,3-BETA,23-TRIACETOXYURS-12,18-DIEN-28-OATE

被引：3

作者：

COX, PJ

DURHAM, DG

LIU, XJ

RICHARDS, RME

机构：

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1995年 / 51卷 / pt 10期

关键词：

D O I：

10.1107/S0108270195005774

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal and molecular structure of the novel triterpenoid methyl 2 alpha,3 beta,23-triacetoxyurs- 12,18-dien-28-oate, C37H54O8, has been determined. There are two molecules in the asymmetric unit, each having a long bond due to steric effects and considerable out-of-plane bending at the C12=C13-C18=L19 chromophores.

引用

页码：2135 / 2137

页数：3

共 49 条

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USUBILLAGA, A
ZABEL, V
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[42] [2-ALPHA(2S,3S,4R,6R),3-BETA,5-ALPHA]-14-HYDROXY-19-OXO-3,2-[(TETRAHYDRO-3,4-DIHYDROXY-6-METHYL-2H-PYRAN-2,3-DIYL)BIS(OXY)]CARD-20(22)-ENOLIDE DIHYDRATE (CALACTIN), C29H39O9.2H2O, A CARDENOLIDE FROM ASCLEPIAS-LINARIA
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[44] STRUCTURE OF (1-ALPHA,3-BETA,5-ALPHA)-5-CHLORO-1,3-DIPHENYL-5-BIS(TRIMETHYLSILYL)METHYL- 1-LAMBDA-6,3-LAMBDA-6,2,4,6,5-LAMBDA-5-DITHIATRIAZAPHOSPHORINE 1,3-DIOXIDE
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[45] 3-BETA, 19-ALPHA-DIHYDROXY-2-OXOURS-12-EN-28-OIC ACID - A PENTACYCLIC TRITERPENE INDUCED IN THE WOOD OF MALUS-PUMILA MILL INFECTED WITH CHONDROSTEREUM-PURPUREUM (PERS EX FR) POUZAR, AND A CONSTITUENT OF THE CUTICULAR WAX OF APPLE FRUITS
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[46] CONSTITUENTS OF BOESENBERGIA SP ISOLATION AND CRYSTAL-STRUCTURE OF CROTEPOXIDE ([1R-(1-ALPHA,2-ALPHA,4-ALPHA,5-BETA,6-ALPHA,4-ALPHA)]-4-[(BENZOYLOXY)METHYL]-3,8-DIOXATRICYCLO[5,1,0,02,4]OCTANE-5,6-DIYL DIACETATE)
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[47] BIOSYNTHESIS OF [14C5-3H4]-CHOLESTA-5,7,24-TRIEN-3BETA-OL AND [14C5-3H4]-5ALPHA-CHOLESTA-7,24-DIEN-3BETA-OL FROM (2R)-[214C-23H]-MEVALONIC ACID BY A YEAST HOMOGENATE
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[48] C-13-H-1 COUPLING-CONSTANTS IN CARBOCATIONS .8. APPLICATION OF THE DELTA-J EQUATION TO TERTIARY DICYCLOPROPYLCARBINYL CATIONS - THE METHYL DICYCLOPROPYLCARBINYL, (1-ALPHA,3-BETA,5-BETA,7-ALPHA)-2-METHYLTRICYCLO[5.1.0.0(3,5)]-OCTAN-2-YL, (1-ALPHA,3-ALPHA,5-ALPHA,7-ALPHA)-2-METHYLTRICYCLO[5.1.0.0(3,5)]OCTAN-2-YL, AND 3-METHYLTETRACYCLO[3.3.1.0(2,8).0(4,6)]NONAN-3-YL (TRIASTERYL) CATIONS (VOL 60, PG 1654, 1995)
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[49] CHEMICAL-CONSTITUENTS OF THE FLINDERSIA .23. DETERMINATION OF THE STRUCTURE OF FLINDERCARPIN-2 AS METHYL (S)-(ACETOXY)([3'S-(3-ALPHA,3A-ALPHA,4-ALPHA,5-BETA,6-ALPHA,6A-ALPHA,7-ALPHA,10A-ALPHA,11A-ALPHA]-5',6'-DIACETOXY-7'-(FURAN-3''-YL)-2',2',3A',6A',11A'-PENTAMETHYL-12'-METHYLENE-9'-OXO-2',3',3A',4',5',6',6A',9',10',11A'-DECAHYDRO-7'H-4',10A'-METHANO-10A'H-FURO[2,3-B]PYRANO-[3,4-G]OXOCIN-3'-YL)ACETATEL)
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