New diterpenes from the common Caribbean gorgonian Briareum asbestinum (Pallus)

SJ Selover, P Crews, B Tagle…

Index: Selover, Scott J.; Crews, Phillip; Tagle, Bruce; Clardy, Jon Journal of Organic Chemistry, 1981 , vol. 46, # 5 p. 964 - 970

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Citation Number: 38

Abstract

The major diterpenes in the toxic extracts of Briareum asbestinum (Pallus) from three Honduras Bay Island collections are reported. The structures and chemistry of two new asbestinins, 2 and 3, and four known ones, 4, 5, 9, and 10, are discwed. Structures for 2 and 3 were derived from spectroscopic arguments and were confiied by chemical interconversions. NMR experiments including 13C at 90 MHz, a plot of JR/JCH with b~, ...