[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

被引：2

作者：

HERNANDEZQUIROZ, T

SORIANOGARCIA, M

RODRIGUEZROMERO, A

VALENCIA, C

HERNANDEZ, L

AGUIRREGARCIA, F

机构：

[1] INST POLITECN NACL,ESCUELA NACL CIENCIAS BIOL,DEPT FARM,FITOQUIM LAB,MEXICO CITY 11340,DF,MEXICO

[2] UNIV AUTONOMA METROPOLITANA,UNIDAD IZTAPALAPA,DEPT BIOTECNOL,AREA PROD NAT,MEXICO CITY 09340,DF,MEXICO

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1994年 / 50卷

关键词：

D O I：

10.1107/S0108270193010790

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This X-ray diffraction study establishes the molecular structure of the title compound. The asymmetric unit comprises two independent molecules (A and B). Both molecules are closely similar with regard to bond lengths and angles. In both molecules, the six-membered rings all adopt chair conformations. The D ring of the steroid moiety has an envelope conformation and the lactone ring is almost flat. The A/B, B/C and A/F ring junctions are trans and the C/D and F/G ring junctions are cis. The crystal structure is stabilized by a three-dimensional network of hyrogen bonds and C-H...O interactions.

引用

页码：935 / 938

页数：4