General Syntheses, and Selectivities of Reactions Therein

Glycoslduloses Cyanomesyl derlv. Sptro-aziridine Branched amino sugar 

Branched sugar (A) Spiro-epoxide Alkylldene derlv. Branched nltro sugar 

Vinyl derlv. Acetyl deriv. 1-Hydroxyethyl derlv. 

98 d-8 and 8,100 d-9, d-11,101 19,108 21,103 and 37,104 in which successive ozonolysis of the vinyl group and reduction were used for formyl- and hydroxymethyl-branched sugars. Diazomethane addition, followed by alkaline ring-opening or reduction of the intermediary, 

The stereoselectivity in the Grignard reaction,97 complementary to that in the methyllithium109 and diazomethane156 reactions, of methyl 3,4-0-isopropylidene-a-L-en/thro-pentopyranosid-2-ulose (62), and that between the Grignard and diazomethane reactions of the / ano-mer107 of 62, methyl 2,3-0-isopropylidene-/ -L-en/thro-pentopyranosid- 

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