Crystal structures of two furanosesquiterpenes from Commiphora sphaerocarpa

Tetrahedron Letters
2000.0

Abstract

The relative stereochemistry of a furanosesquiterpene, reported previously from myrrh, but isolated here from Commiphora sphaerocarpa is determined for the first time as (1(10)E,2R*,4R*)-2-methoxy-8,12 epoxygermacra-1(10),7,11-trien-6-one. Likewise the stereochemistry of furanodienone was established by NMR and X-ray crystallography as (1(10)E,4E)-8,12-epoxygermacra-1(10),4,7,11-tetraen-6-one.

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