TETRANORDITERPENES FROM DETARIUM-MICROCARPUM

The chloroform extract of Detarium microcarpum afforded two tetranorditerpenes, 1-naphthaleneacetic-5- carboxy-1,2,3,4,4a,7,8,8a-octahydro-1,2,4a-trimethyl acid and 1-naphthaleneacetic-7-oxo-1,2,3,4,4a,7,8,8a-octahydro-1,2,4a,5-tetramethyl acid, together with a clerodane diterpene, 2-oxo-kolavenic acid. New spectroscopic data are reported for the two rare tetranorditerpenes.