Amino and substituted amino phosphinylalkanoyl compounds

A compound of the formula ##STR259## wherein R.sub.1 is ##STR260## n is zero or one;

• R.sub.5 is hydrogen, lower alkyl, halo substituted lower alkyl, benzyl, or phenethyl;
• R.sub.3 is hydrogen, lower alkyl, benzyl, or benzhydryl;
• R.sub.19 is hydrogen, lower alkyl, halo substituted lower alkyl, amino substituted lower alkyl, ##STR261## R.sub.20 is lower alkyl, phenyl, benzyl, or phenethyl;
• R.sub.2 is hydrogen, lower alkyl, lower alkenyl, halo substituted lower alkyl, ##STR262## R.sub.13 is hydrogen, lower alkyl of 1 to 4 carbons, lower alkoxy of 1 to 4 carbons, lower alkylthio of 1 to 4 carbons, chloro, bromo, fluoro, trifluoromethyl, hydroxy, phenyl, phenoxy, phenylthio, or phenylmethyl;
• q is zero or an integer from 1 to 7;
• m is zero, one, two or three;
• and
• p is one, two or three provided that p is more than one only if R.sub.13 is hydrogen, methyl, methoxy, chloro, or fluoro.