Hydroxy enone 5 was chosen as the starting material because of difficulty in introducing the hydroxy group at C1 of 12-epi-barbascoate 3, which was readily obtained from
Hydroxy enone 5 was chosen as the starting materialbecause of difficulty in introducing the hydroxy group atC1 of 12-epi-barbascoate 3, which was readily obtained from
Hydroxy enone 5 được chọn làm nguyên liệu ban đầu do khó khăn trong việc giới thiệu các nhóm hydroxy ở C1 12-epi-barbascoate 3, được dễ dàng thu được từ