2 NEW SESQUITERPENE LACTONES FROM CEIBA-PENTANDRA

被引：23

作者：

RAO, KV

SREERAMULU, K

GUNASEKAR, D

RAMESH, D

机构：

[1] SRI VENKATESWARA UNIV,DEPT CHEM,TIRUPATI 517502,ANDHRA PRADESH,INDIA

[2] CCRH,DRUG STANDARDIZAT UNIT,HYDERABAD 500007,ANDHRA PRADESH,INDIA

来源：

JOURNAL OF NATURAL PRODUCTS | 1993年 / 56卷 / 12期

关键词：

D O I：

10.1021/np50102a003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Two new sesquiterpene lactones showing moderate antimicrobial activity have been isolated from the root bark of Ceiba pentandra (Bombacaceae) in addition to the known compounds 8-formyl-7-hydroxy-5-isopropyl-2-methoxyl-3-methyl-1,4-naphthaquinone [1], and 7-hydroxycadalene [2]. The new compounds were characterized as 2,7-dimethoxy-5-isopropyl-3-methyl-8,1-naphthalene carbolactone [3] and 2-hydroxy-5-isopropyl-7-methoxy-3-methyl-8,1-naphthalene carbolactone [4] by chemical and spectroscopic studies.

引用

页码：2041 / 2045

页数：5

共 6 条

[1]

ALI SM, 1971, TETRAHEDRON LETT, P2305

[2] SOLVENT SHIFTS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY .8. SOLVENT SHIFTS INDUCED BY BENZENE AND TOLUENE IN METHOXYBENZENES - A VARIABLE-TEMPERATURE N M R STUDY [J].