中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (1S,4R)-2-[(2R,4S)-5-tert-Butoxy-2,4-dimethyl-pent-(E)-ylidene]-1-isopropyl-4-methyl-cyclohexane | 693833-32-8 | C21H40O | 308.548 |
The SN2′ displacement of menthone-derived allylic carbonates with cuprate reagents occurs with high diastereoselectivity. This method can be used in an iterative fashion to construct stereocenters bearing a 1,3-relationship in a carbon chain. Each iteration provides the adduct in greater than 99% de. The synthesis of three fragments of the polyether ionophore ionomycin is disclosed.Key words: menthone, chiral auxiliary, SN2′ displacement, cuprate, iteration, ionomycin.