A new diterpenoid, 19-acetoxypregaleopsin, has been isolated from the
aerial parts of Leonurus cardiaca. Its structure, [(13R)-8 beta,19-dia
cetoxy-9 alpha,13; 15,16-diepoxylabd-14-en-7-one] was established by s
pectroscopic means. (C) 1998 Elsevier Science Ltd. All rights reserved
.