Practical synthesis of all inositol stereoisomers from myo-inositol
作者:Sung-Kee Chung、Yong-Uk Kwon
DOI:10.1016/s0960-894x(99)00348-0
日期:1999.8
Synthesis of six inositol stereoisomers was successfully carried out via conduritol intermediates prepared from myo-inositol. Dihydroxylation and epoxidation followed by ring opening of the conduritol B, C and F derivatives gave epi-, allo-, muco-, neo-, DL-chiro- and scyllo-inositol. The cis-inositol derivative, which may not be prepared by this approach, was synthesized in 5 steps via 2-O-benzoyl-myo-inositol
Sequential enzymatic and electrochemical functionalization of bromocyclohexadienediols: Application to the synthesis of (−)-conduritol C
作者:Juana Goulart Stollmaier、Tomáš Hudlický
DOI:10.1016/j.tet.2020.130924
日期:2020.2
regiochemistry when compared to the chemical epoxidation with m-CPBA, but with the unexpected formation of bromoconduritol-C, an important intermediate whose electrochemical reduction led to the synthesis of (−)-conduritol-C. Experimental and spectral data are provided for all new compounds.
permitted the absolute configuration of the carbon bearing the hydroxyl groups at the target molecules to be established. All three conduritols and two intermediates were crystallized, and their structures were confirmed by X-ray diffraction. The three conduritols and intermediates were isostructural. The versatility of our methodology is noteworthy to expand the preparation of conduritol C analogs starting
描述了一种利用单取代苯的对映选择性生物催化过程合成 conduritol C 类似物的有效和简便的通用方法。目标分子 (-)-conduritol C、(-)-bromo-conduritol C 和 (-)-methyl-conduritol C 的绝对立体化学模式是通过化学酶法实现的。源自芳烃生物转化的同手性环己二烯-顺-1,2-二醇的立体化学和非分离的乙烯基环氧化物衍生物的对映选择性开环允许在目标分子上建立带有羟基的碳的绝对构型. 所有三种球状糖醇和两种中间体均已结晶,并通过 X 射线衍射证实了它们的结构。三种结构糖醇和中间体是同构的。我们方法的多功能性值得注意,可扩展从甲苯双加氧酶 (TDO) 单取代芳烃底物开始制备 conduritol C 类似物。
Enantiospecific and stereoselective synthesis of (–)-conduritol C from chlorobenzene via microbial oxidation and epoxidation
作者:Howard A. J. Carless
DOI:10.1039/c39920000234
日期:——
A four-step route to (â)-conduritol C 1 is described, via the enantiospecific conversion of chlorobenzene to the diene cis-diol 7 and subsequent cis-epoxidation to yield 8.
Abstract A new and stereospecific synthesis for Conduritol-C 8 and Conduritol-E 13a has been developed starting from p-benzoquinone 1. 1,4-oxygen functionalities were introduced in both synthesis by the reduction of dibromo p-benzoquinone 2 with NaBH4. 2,3-oxygen functionalities were introduced by KMnO4 oxidation of 4 for Conduritol C 8. Oxidation of 3 with m-chloroperbenzoic acid gave 9. Acid-catalyzed