Planta Medica 1984-Aug
Alkaloids from Roots of Strempeliopsis strempelioides - Structures of Strempeliopine and Strempeliopidine1.
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From the roots of STREMPELIOPSIS STREMPELIOIDES K. Schum. (Apocynaceae), the following alkaloids were isolated: (+)-pleiocarpamine, (-)-aspidospermine, (+)-eburnamonine, (+)-tubotaiwine, (+)-haplocidine, (-)-vallesamidine, (+)-tubotaiwine N-oxide, (-)-strempeliopine ( 1A) and a bisindolic base (+)-strempeliopidine ( 2). Another bisindole alkaloid of composition C (38)H (46)N (4) was isolated in minute quantity. The structures were established on the basis of spectral and chemical evidence.