摘要:
A hexacyclic compound 1, which carries an almost full structure of the hetisine skeleton lacking only the six-membered ring with an exo methylene group. was synthesized by applying an acetal-ene reaction on 5 for the bond formation of C-14 and C-20 as well as stereoselective hydrocyanation reaction on 7 for construction of the azabicyclo ring system. (C) 2002 Elsevier Science Ltd. All rights reserved.