Formal Syntheses of Dihydrocorynantheine and Isorhynchophylline via Proline Catalyzed Mannich-Michael Reaction
摘要:
Proline catalyzed Mannich-Michael reaction of 3-ethyl-3-buten-2-one with 9-tosyl-3,4-dihydro-beta-carboline proceeded in a highly stereoselective manner. The reaction was applied to formal syntheses of dihydrocorynantheine and isorhynchophylline.
Formal Syntheses of Dihydrocorynantheine and Isorhynchophylline via Proline Catalyzed Mannich-Michael Reaction
摘要:
Proline catalyzed Mannich-Michael reaction of 3-ethyl-3-buten-2-one with 9-tosyl-3,4-dihydro-beta-carboline proceeded in a highly stereoselective manner. The reaction was applied to formal syntheses of dihydrocorynantheine and isorhynchophylline.
Proline catalyzed Mannich-Michael reaction of 3-ethyl-3-buten-2-one with 9-tosyl-3,4-dihydro-beta-carboline proceeded in a highly stereoselective manner. The reaction was applied to formal syntheses of dihydrocorynantheine and isorhynchophylline.