HRID1732789

反应详情

EQUATION

反应方程式

HRID 1732789 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

Condensation of 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-glucopyranosyl chloride with 5-ethoxycarbonyl-1-pentanol under the same conditions as reported in example II gave a 74% yield of 5-ethoxycarbonylpentyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranoside, mp 101°-102°, [α]D25 -16.8° (c 1.06, chloroform). De-O-acetylation of this compound using sodium methoxide gave after crystallization a 92% yield of 4 mp 154°-155° (melts and resolidifies) remelts 167°, [α]D18 -25.5° (c 1.1, water).