Novel tetranortriterpenoid derivatives from Munrionia henryi

Six novel tetranortriterpenoid derivatives were isolated from the methanolic extract of the whole bodies of Munronia henryi, namely, munronins A-F (1-6). In compounds (3-6), the side chains are rare in tetranortriterpenoids. Their structures were established by extensive NMR experiments. Based on th...

Full description

Saved in:
Bibliographic Details
Published inTetrahedron Vol. 59; no. 23; pp. 4193 - 4199
Main Authors Qi, SH, Chen, L, Wu, DG, Ma, YB, Luo, XD
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier 02.06.2003
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
DYSOXYLUM-HAINANENSE
ACID
MELIACEAE
AZADIRACHTA-INDICA
tetranortriterpenoid derivatives
TRITERPENES
Munronia henryi
LIMONOIDS
AUCOUMEA-KLAINEANA
Online AccessGet full text

Cover

More Information
Summary:Six novel tetranortriterpenoid derivatives were isolated from the methanolic extract of the whole bodies of Munronia henryi, namely, munronins A-F (1-6). In compounds (3-6), the side chains are rare in tetranortriterpenoids. Their structures were established by extensive NMR experiments. Based on the diversity of the side chains, possible biodegradations for the side chains of compounds 1-6 from euphane or tirucallane skeleton are proposed. Munronins A-E exhibited moderate antifeeding activity against Pieris brassicae L, while munronin F showed negative activity. (C) 2003 Elsevier Science Ltd. All rights reserved.
ISSN:0040-4020
DOI:10.1016/S0040-4020(03)00573-8