Showing papers on "Indole alkaloid published in 1977"
22 citations
15 citations
TL;DR: A new alkaloid, majvinine, was isolated from aerial parts of Vinca major and its structure was determined by chemical and spectroscopic investigations.
6 citations
TL;DR: Na-dem methyl-purpeline and Na-demethyl-dihydropurpeline, new indole alkaloids, were isolated from the stem bark of Rauwolfia cumminsii Stapf.
Abstract: Na-demethyl-purpeline and Na-demethyl-dihydropurpeline, new indole alkaloids, were isolated from the stem bark of Rauwolfia cumminsii Stapf. Dihydroindole alkaloids have not previously been reported as occurring in this species.
5 citations
TL;DR: Dihydromancunine, a model for a proposed indole alkaloid biosynthetic intermediate, mancunine was synthesized using a modified Polonovski reaction of desmethylhirsutine N-oxide, which was derived from the indole alkaloid hirsutines as mentioned in this paper.
Abstract: Dihydromancunine, a model for a proposed indole alkaloid biosynthetic intermediate, mancunine, was synthesized using a modified Polonovski reaction of desmethylhirsutine N-oxide, which was derived from the indole alkaloid hirsutine.
4 citations
3 citations
2 citations
01 Jan 1977
TL;DR: The indole alkaloids and related compounds derived from tryptophan are the largest group of plant bases and have been the subject of extensive research for the past twenty years as discussed by the authors.
Abstract: The indole alkaloids and related compounds derived from tryptophan are the largest group of plant bases. They have been the subject of extensive research for the past twenty years, and today considerably more is known, mainly concerning the structure and chemistry of a large number of indole alkaloids and their biosynthesis, which has been the subject of many reviews (BATTERSBY, 1, 3, 4, 5; SCHUTTE, 1; ARIGONI; SPENSER; GROGER; GEISSMAN and CROUT; LEETE, 1, 3, 4, 5, 6; SCOTT, 1; SUNDBERG; KUTNEY et al., 2; STAUNTON; SCOTT et al., 5; CORDELL). The largest group of indole alkaloids — about 1200 compounds — contain beside a tryptamine part, a characteristic C10 or C9 fragment. The alkaloids mentioned can be correlated mostly to the corynanthe — (e.g., ajmalicine, XV), strychnos— (e.g., akuammicine, XI), aspidosperma— (e.g., vindoline, XIX) and iboga-types (e.g., catharanthine, XXII). Only these indole alkaloids will be discussed in this paper.