整个前列腺素 (PG) 骨架的一锅高产构建是通过铜介导的 ω 侧链单元与 4R 氧化的 2-环戊烯酮衍生物的共轭加成和原位醛醇缩合的组合来实现的。用α侧链醛生成烯醇化物。随后从加合物中去除 7-羟基并解封保护基团,得到 E 系列的 PG。PGE1 已通过五步序列以 56% 的总收率制备。Selective transformation of the PGE to PGD structure can be realized simply by appropriate selection of the hydroxyl protective groups in the five-membered ring and ω side-chain units. 使用 6-甲酰基-5-己烯酸甲酯作为 α 侧链醛单元的邻位 carba 缩合,然后从羟醛产物脱氧得到 5,6-didehydro-PGE2 衍生物,在各种天然
prepared in 56% overall yield through the five-step sequence. Selective transformation of the PGE to PGD structure can be realized simply by appropriate selection of the hydroxyl protective groups in the five-membered ring and ω side-chain units. The vicinal carba-condensation using methyl 6-formyl-5-hexynoate as the α side-chain aldehyde unit followed by deoxygenation from the aldol products gives
整个前列腺素 (PG) 骨架的一锅高产构建是通过铜介导的 ω 侧链单元与 4R 氧化的 2-环戊烯酮衍生物的共轭加成和原位醛醇缩合的组合来实现的。用α侧链醛生成烯醇化物。随后从加合物中去除 7-羟基并解封保护基团,得到 E 系列的 PG。PGE1 已通过五步序列以 56% 的总收率制备。Selective transformation of the PGE to PGD structure can be realized simply by appropriate selection of the hydroxyl protective groups in the five-membered ring and ω side-chain units. 使用 6-甲酰基-5-己烯酸甲酯作为 α 侧链醛单元的邻位 carba 缩合,然后从羟醛产物脱氧得到 5,6-didehydro-PGE2 衍生物,在各种天然