1-Thio-2-deoxy-β-D-glucose sodium salt dihydrate (X), m.p. 114∼115°, [α]15D+22°was prepared starting from 3, 4, 6-tri-O-acetyl-D-glucal (I) via 2-deoxy-3, 4, 6-tri-O-acetyl-D-glucopyranosyl bromide (VII) and 2-deoxy-3, 4, 6-tri-O-acetyl-β-D-glucopyranosyl ethylxanthate (VIII). The product afforded 2-deoxy-D-glucose anilide, benzyl 1-thio-2-deoxy-β-D-glucoside, m.p. 96∼97°, [α]21D-242°, and benzyl 1-thio-2-deoxy-3, 4, 6-tri-O-acetyl-β-D-glucoside, m.p. 60∼61°, [α]16D-192°. The optical rotatory dispersion of VIII reveals the similarity with that of 2, 3, 4, 6-tetra-O-acetyl-β-D-glucopyranosyl ethylxanthate, which supports the β-configuration of VIII, together with that of the compounds derived from VIII. Heating of I with thioacetic acid for 5.5 hours in the presence of a small amount of sulfuric acid, afforded crystals, m.p. 104∼105°, [α]22D+164°, in 60% yield. The structure was assigned to be 1-S-acetyl-1-thio-2, 3-didehydro-2, 3-dideoxy-4, 6-di-O-acetyl-α-D-eryhtro-hexose (II).
1-
硫代-2-脱氧-β-
D-葡萄糖钠盐
二水合物 (X),m.p. 114∼115°, [α]15D+22°由3, 4, 6-三-O-乙酰基-D-glucal (I) 起始,经2-脱氧-3, 4, 6-三-O-乙酰基制备-
D-吡喃葡萄糖基
溴 (VII) 和 2-脱氧-3,4,6-三-O-乙酰基-β-
D-吡喃葡萄糖基乙基黄原酸酯 (VIII)。产物得到2-脱氧-
D-葡萄糖酰
苯胺、苄基1-
硫代-2-脱氧-β-
D-葡萄糖苷,m.p.124-199℃。 96∼97°、[α]21D-242°、苄基1-
硫代-2-脱氧-3,4,6-三-O-乙酰基-β-
D-葡萄糖苷,熔点: 60~61°,[α]16D-192°。 VIII 的旋光色散显示与 2,3,4,6-四-O-乙酰基-β-
D-吡喃葡萄糖基乙基黄原酸酯的相似性,支持 VIII 的 β-构型,以及衍生自 的化合物的八.在少量
硫酸存在下,将I与
硫代乙酸一起加热5.5小时,得到晶体,m.p.125-199℃。 104∼105°,[α]22D+164°,收率60%。该结构被指定为1-S-乙酰基-1-
硫代-2, 3-二脱氢-2, 3-二脱氧-4, 6-二-O-乙酰基-α-D-赤式己糖(II)。