中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
5,8-二甲氧基-2,2-二甲基-2H-色烯 | 2,2-dimethyl-5,8-dimethoxy-2H-1-benzopyrane | 113949-29-4 | C13H16O3 | 220.268 |
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.