申请人:Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
公开号:US05565345A1
公开(公告)日:1996-10-15
A process for preparing 5,6-dihydro-4-hydroxy-(S)-6-methyl-thieno[2,3-b]thiopyran-7,7-dioxide having the formula (II): ##STR1## which comprises subjecting 5,6-dihydro-4-oxo-(S)-6-methyl-thieno[2,3-b]thiopyran-7,7-dioxide having the formula (I): ##STR2## to the action of a microorganism to reduce the thienothiopyran derivative having the formula (I), and collecting 5,6-dihydro-4-hydroxy-(S)-6-methyl-thieno-[2,3-b]thiopyran-7,7-dioxide having the formula (II) from the reaction mixture, wherein said microorganism belongs to the genus selected from the group consisting of Ambrosiozyma, Arthroascus, Ashbya, Candida, Cryptococcus, Hansenula, Kluyveromyces, Lipomyces, Lodderomyces, Metschnikowia, Pachysolen, Pichia, Rhodosporidium, Rhodotorula, Saccharomyces, Saccharomycopsis, Schwanniomyces, Sporidiobolus, Spolobolomyces, Stephanoascus, Trigonopsis, Trichosporon and Wingea, according to which, a simple and effective. process for preparing 5,6-dihydro-4-hydroxy-(S)-6-methyl-thieno-[2,3-b]thiopyran-7,7-dioxide.
一种制备式(II)的5,6-二氢-
4-羟基-(S)-6-甲基
噻吩[2,3-b]
噻吩吡喃-7,7-二氧化物的工艺,包括将式(I)的5,6-二氢-4-氧代-(S)-6-甲基
噻吩[2,3-b]
噻吩吡喃-7,7-二氧化物暴露于微
生物作用下以还原式(I)的
噻吩噻吩吡喃衍
生物,并从反应混合物中收集式(II)的5,6-二氢-
4-羟基-(S)-6-甲基
噻吩[2,3-b]
噻吩吡喃-7,7-二氧化物,其中所述微
生物属于以下组中所选的属:Ambrosiozyma、Arthroascus、Ashbya、Candida、Cryptococcus、Hansenula、Kluyveromyces、Lipomyces、Lodderomyces、Metschnikowia、Pachysolen、Pichia、Rhodosporidium、Rhodotorula、Saccharomyces、Saccharomycopsis、Schwanniomyces、Sporidiobolus、Spolobolomyces、Stephanoascus、Trigonopsis、Trichosporon和Wingea,因此,提供了一种简单有效的制备5,6-二氢-
4-羟基-(S)-6-甲基
噻吩[2,3-b]
噻吩吡喃-7,7-二氧化物的工艺。