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Angustilodine, an Unusual Pentacyclic Indole Alkaloid from Alstonia
Author(s) -
Kam TohSeok,
Choo YeunMun
Publication year - 2004
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200490033
Subject(s) - chemistry , indole alkaloid , alkaloid , indole test , stereochemistry , apocynaceae , carbon skeleton , botany , biology
Two new indole alkaloids, angustilodine ( 1 ), with an unprecedented pentacyclic carbon skeleton, and angustilocine ( 2 ), belonging to the seco ‐angustilobine‐B group of alkaloids, were obtained from the leaf extract of the Malayan species Alstonia angustiloba , and their structures were established by spectroscopic analysis.