| 摘要 |
<p>(A) Compounds of formula (I):- where R1 is H, or lower alkyl R2 is H, lower alkyl, alkenyl or alkynyl excepting that R1 and R2 cannot both be H. (B) Acid addition salts of (I). (C) Quaternary ammonium salts of (I). (i) Centrally active muscle relaxants and anti-convulsants. (iI) Intermediates. beta(N-alpha-Dibenzyl-N-methyl) amino acetaldehyde diethylacetal oxalate (2.5 g.) in 75% sulphuric acid (25 ml.) is heated at 100 deg. for 1 hr. After cooling the reaction mixture is diluted with 20 ml. water, made alkaline with 30% sodium hydroxide soln. and shaken out 5 times with ether.</p> |
