Thymol derivatives from Vieraea laevigata

Abstract

The aerial parts of Vieraea laevigata afforded, in addition to the known compounds stigmasterol and 9-acetoxy-7-isobutyryloxy-8,10-dihydro-8,10-epoxythymol-angelate, six new thymol derivatives, 7,9-di-(2-methylbutyryloxy)-8,10-epoxythymol-angelate,9-isobutyryloxy-7-(2-methylbutyryloxy)-8, 10-epoxythymol-angelate,9-angeloyloxy-7, 10-di-(2-methylbutyryloxy)-8-hydroxy-thymol, 10-acetoxy-9- angeloyloxy-7-(2-methylbutyryloxy)-8-hydroxy-thymol, 9-angeloyloxy-7-(2-methylbutyryloxy)-8,10- dihydroxy-thymol and 9-acetoxy-7-(2-methylbutyryloxy)-8,10-dihydroxy-thymol. © 1993.