New cadinane-type sesquiterpenes from the roots of Taiwania cryptomerioides Hayata

Abstract

Six new cadinane-type sesquiterpenes, (1β,4β,5α,10α)- 1,4-epoxymuurolan-5-ol (1), (4α,10β)-4,10-dihydroxycadin-1(6)-en-5- one (2), (2β,3α,4β,6β)-2,3-dihydroxycadin-1(10)-en-5-one (3), (2β,3α)-α-corocalene-2,3-diol (4), (7S)-α-calacoren- 14-ol (5), and (8β,9β,10β)-8,9-epoxycalamenene-3,10-diol (6) together with one known compound, (8β,9β,10β)-8,9-epoxycalamenen- 10-ol (7), were isolated from the roots of Taiwania cryptomerioides. The structures of the new constituents were essentially elucidated by spectral evidence. © 2007 Verlag Helvetica Chimica Acta AG.