Synthesis of Clavulones (Claviridenones) via [3+2] Annulation Using Reaction of (β-(Phenylthio)acryloyl)silane with Lithium Enolate of Alkyl Methyl Ketone
作者:Kei Takeda、Akemi Nakajima、Eiichi Yoshii
DOI:10.1055/s-1997-781
日期:1997.3
Synthesis of clavulones II (1) and III (2) (claviridenones c and b), antitumor marine prostanoids, has been achieved via [3+2] annulation using reaction of (β-(phenylthio)acryloyl)silane 5 with methyl ketone enolate 6 followed by installation of the α-side chain by aldol reaction.
克拉维酮 II (1) 和 III (2)(claviridenones c 和 b)、抗肿瘤海洋前列腺素类化合物的合成,已通过 (β-(苯硫基)丙烯酰基)硅烷 5 与甲基酮烯醇化物的反应通过 [3+2] 成环实现。 6 随后通过羟醛反应安装α-侧链。
Prostanoids and Related Compounds. IV. Toral Synthesis of Clavulones.
An efficient and stereoselective synthesis of optically active clavulones has been accomplished by the use of the unnatural type dichloro Corey lactone 1 as a chiral pool.
通过使用非天然型二氯内酯 1 作为手性池,高效、立体选择性地合成了具有光学活性的克拉维酮。
4-Epiclavulones, New Marine Prostanoids from the Okinawan Soft Coral, Clavularia viridis.
Two new marine prostanoids, 4-epiclavulone II and 4-epiclavulone III, were isolated from the Okinawan soft coral, Clavularia viridis. Their structures including absolute configurations were determined based on the results of spectroscopic analysis and chemical conversion.
从冲绳软珊瑚(Clavularia viridis)中分离出了两种新的海洋前列腺素--4-表黄酮 II 和 4-表黄酮 III。根据光谱分析和化学转化的结果,确定了它们的结构,包括绝对构型。
Absolute stereochemistry of new prostanoids clavulone I, II and III, from Clavularia viridis Quoy and Gaimard