[题目]Sesquiterpenes from Petasites*1 [作者]L. Novotný, K. Kotva, J. Toman and V. Herout [出处] Phytochemistry,Volume 11, Issue 9, September 1972, Pages 2795-2799 链接] http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TH7-42GFDS3-BH&_user=1553337&_coverDate=09%2F30%2F1972&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1568247530&_rerunOrigin=google&_acct=C000053666&_version=1&_urlVersion=0&_userid=1553337&md5=fa51ddd4348fab05c5931cc08f56e999&searchtype=a