Synthetic studies toward the kempane diterpenes. Diels–Alder additions to bicyclic dienes
作者:Chunjian Liu、Guanglin Bao、D. Jean Burnell
DOI:10.1039/b104924k
日期:2001.10.11
Reduction and then alkylation of a tetracyclic adduct with 1,3-dithienium tetrafluoroborate provided compound 56, which has the correct stereochemistry at three key carbons for elaboration to the kempanediterpenes. Exploratory reactions with tricyclic model compounds and with tetracyclic adducts have been used to assess the development of the desired stereochemistry about the decalin moiety. X-Ray structures