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Five new indole alkaloids from the leaves of Rauvolfia yunnanensis

Authors
Journal
Fitoterapia
0367-326X
Publisher
Elsevier
Volume
89
Identifiers
DOI: 10.1016/j.fitote.2013.05.017
Keywords
  • Rauvolfia Yunnanensis
  • Indole Alkaloids
  • Rauvoloids A–E

Abstract

Abstract Five new indole alkaloids, rauvoloids A–E (1–5), together with two known ones, raucaffrinoline (6) and perakine (7) were isolated from the leaves of Rauvolfia yunnanensis. Their structures were elucidated by extensive spectroscopic methods. Structurally, rauvoloids A (1), B–C (2–3) and D (4) with unusual substitution patterns (no substitution, Cl and (1E)-3-oxo-butenyl, respectively) at C-20, are the first examples of perakine-type alkaloids with C18 and C22 skeletons.

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