Thioanhydro sugars. Part IX: Enantiospecific synthesis of a polyhydroxythio lane, key intermediate for the preparation of glycosidase inhibitors bearing inner thiosulfonium salt
作者:Isidoro Izquierdo、Marı́a T. Plaza、Rafael Asenjo、Antonio Ramı́rez
DOI:10.1016/s0957-4166(02)00368-3
日期:2002.7
(2R,3R,4S)-3,4-Dihydroxy-2-[(R)-1,2-dihydroxyethyl]thiolane (1,4-anhydro-4-thio-D-mannitol), 1 has been prepared from methyl 4,6-O-benzylidene-alpha-D-altropyranoside 2 in seven steps, the latter being readily available from commercial methyl alpha-D-glucopyranoside. (C) 2002 Elsevier Science Ltd. All rights reserved.
(2R,3R,4S)-3,4-二羟基-2-[(R)-1,2-二羟基乙基]硫杂环己烷(1,4-无水-4-硫-D-甘露醇),1,已由甲基4,6-O-苯甲酰-α-D-阿罗吡喃糖苷2经七步制得,后者由市售的甲基α-D-葡萄吡喃糖苷方便得到。