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Paper | Regular issue | Vol 29, No. 12, 1989, pp.2317-2326
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5100
Five New Diterpenoids from Aconitum dolichorhynchum

Liang Huilling and Chen Siying*

*Academica Sinica, Kunming Institute of Botany, Heilongtan, Kunming, Yunnan, China

Abstract

From the root extracts of Aconitum dolichorhynchum Wang var. subglabratum T. L. Ming, we have isolated five new minor alkaloids: dolichotine A (I), dolichotine B (II), dolichotine C (III), dolichotine D (IV) and dolichotine E (V), besides yunaconitine (VI), 8-deacetylyunaconitine (VII), crassicauline A (VIII), talatisamine (IX), columbidine (X) and cammaconine (XI). The structures of these alkaloide were determined with the aid of spectral data and correlation with compounds of established structures. The structure of dolichotine C was confimed by syntheeis from talatisamine and partial hydrolysis. All the new alkaloids are characteristic of aromatic acid ester or palmitic acid ester substituted at C8 of C19-diterpenoid alkaloids.