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BIBTEX RIS

Five New Labdane-Type Diterpenes from Excoecaria agallocha. IV.

1998; Pharmaceutical Society of Japan; Volume: 46; Issue: 9 Linguagem: Inglês

10.1248/cpb.46.1393

ISSN

1347-5223

Autores

Tenji Konishi, Yasuhiro Fujiwara, Takao Konoshima, Shiu Kiyosawa,

Tópico(s)

Traditional and Medicinal Uses of Annonaceae

Resumo

Five new labdane-type diterpenes were isolated from the resinous wood of Excoecaria agallocha. The structures of these compounds were established as ent-13-epi-8, 13-epoxy-2-hydroxylabda-1, 14-dien-3-one (1), ent-13-epi-8, 13-epoxy-14S, 15-dohydroxylabdan-3-one (2), ent-13-epi-8, 13-epoxy-2, 3-secolabd-14-ene-2, 3-dioic acid (3), ent-13-epi-8, 13-epoxy-2, 3-secolabd-14-ene-2, 3-dioic acid 3-methyl ester (4) and ent-13-epi-8, 13-epoxy-2-oxa-3-oxolabd-14-ene-1R-carboxylic acid (5).

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