| 摘要 |
<p>1,227,383. Propanolamine derivatives. BOEHRINGER INGLEHEIM G.m.b.H. 20 May, 1968 [18 May, 1967; 1 June, 1967], No. 23978/68. Heading C2C. [Also in Division A5] Racemic and optically active compounds of the general formula (R = C 1-4 alkyl, R 1 = ethynyl and R2,3 = H or C 1-4 alkyl or alkoxy) and their salts are prepared by (a) reacting a compound of the formula (Z = oxiranyl or 2-halo-1.hydroxyethyl) with RNH 2 , (b) removing the protecting group G from a compound of the formula or (c) hydrolysing a compound of the formula or (R 4 , 5 = H, alkyl, aralkyl or aryl), optionally followed in each case by resolution and/or salt formation.</p> |
