A new [ABCD → ABCDE] cycloaddition strategy for the approach to Yohimbe alkaloids : Stereoselective synthesis of (±)-3-epi-allo-yohimbone
摘要:
Diels-Alder cycloaddition between lactam-sulfone 9 and diene 10 led to adducts 11 + 12 (30 : 1, respectively). Compound 11 has been converted in 4 steps into (+/-)-3-epi-allo-yohimbone 16.
A new [ABCD → ABCDE] cycloaddition strategy for the approach to Yohimbe alkaloids : Stereoselective synthesis of (±)-3-epi-allo-yohimbone
摘要:
Diels-Alder cycloaddition between lactam-sulfone 9 and diene 10 led to adducts 11 + 12 (30 : 1, respectively). Compound 11 has been converted in 4 steps into (+/-)-3-epi-allo-yohimbone 16.