Smithkline Corporation

Smithkline Beckman Corporation

David L Ladd

Joseph Weinstock

Stephen T Ross

1-Acylamino-1-cyclopentanecarboxylic acids have been prepared by acylation of certain 1-amino-1-cyclopentanecarboxylic acids and found to have renal vasodilating and diuretic properties.

1-Acylamino-1-cyclopentanecarboxylic acids

2,4-Amino, guanidinopyrimidines have diuretic activity. A representative species of these compounds is 2-guanidino-4-amino-6-chloroguanidine which is prepared by the stepwise replacement of first the 2-halo of a 2,4,6-trihalopyrimidine by guanidino and then the 4-halo by ammonia.

Guanidinopyrimidine compounds, compositions and method of using as a

Pharmaceutical compositions having as active diuretic ingredients certain 4-guanidinopyridines are described. Representative diuretic compounds are 5-amino-6-chloro-4-guanidinopyrimidine and 6-amino-5-nitro-4-guanidinopyrimidine.

Pharmaceutical compositions containing guanidinopyrimidines

The compounds of this invention are substituted benzofurans and benzothiophenes having pharmacological activity. In particular, these compounds have coronary vasodilator activity and are useful in the treatment of angina pectoris.

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Overbrook Hills, PA, United States of America

David L Ladd