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New compounds from hyptis. X-ray crystal and molecular structures of olguine

✍ Scribed by A. Alemany; C. Márquez; C. Pascual; S. Valverde; A. Perales; J. Fayos; M. Martínez-Ripoll

Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
260 KB
Volume
20
Category
Article
ISSN
0040-4039

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✦ Synopsis

The structure (including absolute stereochemistry) of olguine, an unsaturated lactone isolated from an unclassified Hyptis species, has been established by spectroscopic and X-ray analysis.

Quite a few species of the Hyptis genus have been studiedl. Among the components already reported are a hyptolide from H. pectinata leaves and a flavonoid glycoside from H. capitatal. Betulinic acid2 and two other diterpenes of the abietane type -suaveolic acid and suave101 3 -have also been isolated, from H. emoryl and H. suaveolens, respectively. Another diterpene of the same type has been isolated from H. fructicosa 4 . In this communication we report the isolation of

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