中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1-[2-(2-tetrahydropyranyloxy)-3,6-dimethoxyphenyl]-3-methyl-2-buten-1-ol | 358622-84-1 | C18H26O5 | 322.401 |
1-Methoxy-2-naphthol was converted by MOM ether formation, lithiation at C-3, reaction with 3,3-dimethylacryloyl chloride, cyclization, and oxidation using cerium ammonium nitrate to 4-keto-α-lapachone (2,2-dimethyl-4-keto-1-oxa-1,2,3,4-tetrahydroanthra-5,10-quinone). Reduction by biotransformation using Mortierellaisabellina ATCC 42613 gave (S)-4-hydroxy-α-lapachone in high (> 95%) optical purity. Reduction of several 2,2-dimethyl-4-chromanones to the corresponding (S)-alcohols by M. isabellina is also reported. Keywords: biotransformation, chemoenzymatic, 4-hydroxy-α-lapachone, Mortierellaisabellina.