1,4-Remote stereocontrol by asymmetric catalytic carbonyl-ene reaction with chiral homoallylic ethers: An application to the asymmetric synthesis od (11R,14S)-anti- and (31R,34S)-syn-segements of immunosuppressant rapamycin
作者:Koichi Mikami、Akihiro Yoshida
DOI:10.1016/0040-4039(94)80120-7
日期:1994.10
1,4-Remote stereocontrol is established through double asymmetric induction in asymmetric catalytic glyoxylate-ene reaction, by simple combination of the chirality of homoallytic ethers and binapthol-titanium catalyst. The present approach to 1,4-remote stereocontrol can be applied to the asymmetric synthesis of the diastereomeric (11R,14S)-anti- and (31R,34S)-syn-fragments of an immunosuppressant
1,4-远程立体控制是通过不对称催化乙醛酸-烯反应中的双不对称诱导,通过将均烯丙基醚和联萘醇-钛催化剂的手性简单组合而建立的。1,4-远程立体控制的本方法可用于免疫抑制剂雷帕霉素的非对映异构(11R,14S)-抗和(31R,34S)-syn片段的不对称合成,其中Me和OH组具有远程关系。