HRID25739

反应详情

EQUATION

反应方程式

HRID 25739 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

By using an analogous procedure to that described for Example 44, tert-butyl (5S,12S)-12-[(R)-[(3R,4R,5R)-3,4-bis{[tert-butyl(dimethyl)silyl]oxy}-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-5-isobutyl-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate (100 mg, 0.097 mmol, obtained from Example 4) and tetrabutylammonium fluoride 0.292 ml, 0.292 mmol) were stirred in tetrahydrofuran (1 ml) under nitrogen for 2.5 hours at room temperature. The residue was chromatographed (flash column, silica gel, 6.5% methanol in methylene chloride) to provide tert-butyl (5S,12S)-12-[(R)-[(3S,4R,5R)-3,4-dihydroxy-5-(3-(4-methoxybenzyl)-2,4-dioxo-3,4-dihydro-1(2H)-pyrimidinyl)tetrahydro-2-furanyl](hydroxy)methyl]-5-isobutyl-3,6-dioxo-1-phenyl-2-oxa-4,7,11-triazatridecan-13-oate (55 mg, 71%) as a white solid.

WORKUP

后处理

  1. customThe residue was chromatographed (flash column, silica gel, 6.5% methanol in methylene chloride)