基于锡 (II) 催化的不对称醛醇反应(手性路易斯酸控制合成(CLAC 合成)),已经开发了鞘氨醇 B 和 F 及其立体异构体的明确合成路线。使用催化量的手性源进行有效的对映选择性合成以及该策略在合成鞘氨醇家族中的有效性已被成功证明。使用合成的鞘氨醇 B 的立体异构体,揭示了其立体化学与其 SPT 抑制活性的相关性。
The asymmetric synthesis of sphingofungin F has been achieved and its stereochemistry has been determined. Its structure, including the absolute configuration of the chiral centers, was found to be similar to that of sphingofungin B or myriocin. The synthesis is based on the catalytic asymmetric aldol reaction, and efficient enantioselective synthesis using a small amount of a chiral source as well
已经实现了鞘氨醇 F 的不对称合成并确定了其立体化学。发现其结构,包括手性中心的绝对构型,与鞘氨醇 B 或 myriocin 相似。该合成基于催化不对称醛醇反应,使用少量手性来源的高效对映选择性合成以及我们对鞘氨醇家族的合成策略的有效性已得到成功证明。
Use of heterocycles as chiral ligands and auxiliaries in asymmetric syntheses of sphingosine, sphingofungins B and F
作者:Shū Kobayashi、Takayuki Furuta
DOI:10.1016/s0040-4020(98)00484-0
日期:1998.8
prepared from 5 according to standard transformation. The chiral hydrophobic side chain (6) of sphingofungin B was synthesized using a catalytic asymmetric aldol reaction using chiralligand 1-ent. Another keystep in the total synthesis of sphingofungin B was a condensation of chiral aldehyde 7 and chiral heterocycle 2. Similarly, the reaction of chiral aldehyde 8 with heterocycle 3 was a keystep for
Unambiguous synthetic routes to sphingofungins B and F and to their stereoisomers have been developed based on the tin(II)-catalyzed asymmetric aldol reaction (Chiral Lewis Acid-Controlled Synthesis (CLAC Synthesis)). Efficient enantioselective synthesis using a catalytic amount of a chiral source as well as the effectiveness of this strategy for the synthesis of the sphingofungin family have been successfully
基于锡 (II) 催化的不对称醛醇反应(手性路易斯酸控制合成(CLAC 合成)),已经开发了鞘氨醇 B 和 F 及其立体异构体的明确合成路线。使用催化量的手性源进行有效的对映选择性合成以及该策略在合成鞘氨醇家族中的有效性已被成功证明。使用合成的鞘氨醇 B 的立体异构体,揭示了其立体化学与其 SPT 抑制活性的相关性。