Frishauf, Holtz, Goodman, Langer & Chick, P.C.
Amino acid derivatives
 An amino acid compound of the formula: R.sup.1 NH--CH(R.sup.2)--COHN--A--ONO.sub.2, wherein R.sup.1 represents a hydrogen atom, a C.sub.1 -C.sub.7 alkanoyl group, a C.sub.1 -C.sub.6 alkoxycarbonyl group, a C.sub.6 -C.sub.10 arylcarbonyl group, a C.sub.7 -C.sub.13 aralkylcarbonyl group, a C.sub.7 -C.sub.13 aralkyloxycarbonyl group or a 5- or 6-membered aromatic heterocyclic carbonyl group; R.sup.2 represents a substituted C.sub.1 -C.sub.6 alkyl group; and A represents a C.sub.2 -C.sub.5 alkylene group; and pharmacologically acceptable salts thereof. The amino acid compound has an excellent vasodilator action for collateral vessels and is useful for treating angina pectoris. 
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C C C C C C C C A A C C C C C C
C07D C07C C07C C07D C07D C07D C07D C07C A61P A61P C07C C07C C07C C07D C07C C07D
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Hiroyuki Sadao Shigeki Takao Fujio Hiroshi
Koike Ishihara Miyake Yoshioka Saito Mizuno