Nimonol and 6-oxonimonol

被引：8

作者：

Kabaleeswaran, V

Malathi, R

Rajan, SS

Suresh, G

Narashiman, NS

机构：

[1] Univ Madras, Dept Crystallog & Biophys, Chennai 600025, India

[2] Sci Fdn, SPIC, Ctr Agrochem Res, Chennai 600032, India

[3] Natl Lab, Pune, Maharashtra, India

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 2000年 / 56卷 / 01期

关键词：

D O I：

10.1107/S0108270199011609

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structures of two intact limonoids, nimonol, 7 alpha-acetyl-17 alpha-(3-furyl)-6 alpha-hydroxy-4 alpha,4 beta,8 beta-trimethyl-5 alpha, 18 alpha-androsta-1,14-dien-3-one (C28H36O5), and 6-oxonimonol, 7 alpha-acetyl-17 alpha-(3 -furyl)-4 alpha,4 beta,8 beta-trimethyl-5 alpha, 18 alpha-androsta-1,14-diene-3,6-dione (C28H34O5), are reported. The molecular features are mostly the same in the two structures; however the orientations of the acetoxy group are different in the two structures. The packing in nimonol is due to O-H ... O hydrogen bonds while in 6-oxonimonol it is due to C-H ... O hydrogen bonds.

引用

页码：82 / 84

页数：3

共 11 条

[1] AN X-RAY CRYSTALLOGRAPHIC, MASS SPECTROSCOPIC, AND NMR-STUDY OF THE LIMONOID INSECT ANTIFEEDANT AZADIRACHTIN AND RELATED DERIVATIVES [J].

BILTON, JN ;

BROUGHTON, HB ;

JONES, PS ;

LEY, SV ;

LIDERT, Z ;

MORGAN, ED ;

RZEPA, HS ;

SHEPPARD, RN ;

SLAWIN, AMZ ;

WILLIAMS, DJ .

TETRAHEDRON, 1987, 43 (12) :2805-2815

[2]

DUAX WL, 1975, TOPICS STEREOCHEMIST, V9

[3]

Enraf-Nonius, 1989, CAD 4 SOFTW VERS 5 0

[4]

FRENZ BA, 1984, ENR NON SDP PLUS STR

[5] Molecular and crystal structure of azadirachtin-H [J].

Govindachari, TR ;

Gopalakrishnan, G ;

Rajan, SS ;

Kabaleeswaran, V ;

Lessinger, L .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1996, 52 :145-150

[6] Insect antifeedant and growth-regulating activities of salannin and other c-seco limonoids from neem oil in relation to azadirachtin [J].

Govindachari, TR ;

Narasimhan, NS ;

Suresh, G ;

Partho, PD ;

Gopalakrishnan, G .

JOURNAL OF CHEMICAL ECOLOGY, 1996, 22 (08) :1453-1461

[7]

Johnson C. K., 1976, ORNL5138 ORTEP

[8]

KABALEESWARAN V, 1994, CURR SCI INDIA, V66, P362

[9]

SHELDRICK GM, 1997, SHELXL97 PROGR REFIN

[10]

SHELDRICK GM, 1986, SHELXS86 PROGR SOLUT

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