The Journal of organic chemistry, 68(22), 8529-8533 (2003-10-25)
A nonclassical, totally stereoselective synthesis of orthogonally protected 1,3-disaccharides is reported. Enantiomerically pure beta-keto-delta-lactones, efficiently obtained from glucal and galactal, are transformed into electron-poor heterodienes and chemo-, regio-, and stereoselectively cycloadded to glycals as electron-rich dienophiles, to directly afford 2-thiodisaccharides.
Zhongguo Zhong xi yi jie he za zhi Zhongguo Zhongxiyi jiehe zazhi = Chinese journal of integrated traditional and Western medicine, 21(9), 649-651 (2003-02-11)
To observe the effect of Shuangcao Tuihuang Granule-1 (SCTH-1) in treating severe jaundice of acute icterohepatitis and to study its mechanism. Thirty-four patients with severe jaundice of acute icterohepatitis were treated with SCTH-1, their therapeutic effects were analyzed. In the
A convenient method for the stereoselective synthesis of diasteroisomeric vinyl epoxides (-)-2α and (-)-2β, the carba analogs of D-galactal and D-allal-derived vinyl epoxides 1α and 1β, has been elaborated starting from tri-O-acetyl-D-glucal. The key step of this synthesis is an
Pyranosyl chlorides prepared in situ from tri-O-benzyl-D-galactal and TolSCl react with silyl enol ethers, allyltrimethylsilane, and vinyl ethers to give a mixture of beta-C-galacto and alpha-C-talopyranosides in a ratio of 19:1.
Chemical communications (Cambridge, England), (12)(12), 1294-1295 (2002-07-12)
The ceric(IV) ammonium nitrate (CAN)-mediated radical addition of dimethyl malonate to glycals 1 affords methyl glycosides 2 and ortho esters 3 as main products; the product distribution strongly depends on the substitution pattern at the 1-position, which can be rationalized
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