PROCESS FOR PREPARING ALPHA-SUBSTITUTED UREIDO BENZYL PENICILLIN DERIVATIVES
摘要
<p>The title compds. of formula [I were prepd. by reacting Nbenzoylcarbamine acids with alpha-aminobenzyl penicillines. Thus, 12.9 g N,O-bis(trimethylsilyl)acetamide was reacted with amoxicillin at 10-15≰C to give 4.5 g 6-[D(-)-alpha-[3-(3,4-dihydroxybenzoyl)-3- (3-hydroxypropyl)-1-ureido -alpha-(4-hydroxyphenyl) acetamide penicillanic acid, a white powder.</p>
