Methanol → s-Glycerylcysteine

Triethylamine (6 g, 8.2 ml, 58 mmoles) was added to L-cysteine hydrochloride (3 g, 19 mmole) and 3-bromo-propan-1,2-diol (4.2 g, 2.36 ml, 27 mmole) in water and the homogeneous solution kept at room temperature for 3 days. The solution was reduced in vacuo at 40° C. to a white residue which was boiled with methanol (100 ml), centrifuged and the residue dissolved in water (5 ml). This aqueous solution was added to acetone (300 ml) and the precipitate isolated by centrifugation. The precipitate was purified by several precipitations from water with acetone to give S-(2,3-dihydroxypropyl)cysteine as a white amorphous powder (2.4 g, 12.3 mmol, 64.7%).

1. customwas reduced in vacuo at 40° C. to a white residue which
2. customthe precipitate isolated by centrifugation
3. customThe precipitate was purified by several precipitations from water with acetone

ORDレコード

ord-eb1296fc119549d5812043015243cf3f

出典データセット

uspto-grants-2009_08

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07569225B2