American Cyanamid Company

Judith Menschik

Rolf Paul

There are provided substituted 3-(4-imidazolyl-methylene)carbazic acid esters and 3-(4-imidazolylmethylene)dithiocarbazic acid esters useful as intermediates for the preparation of compounds which inhibit the enzyme cyclic-AMP phosphodiesterase.

Substituted 3-(4-imidazolylmethylene)carbazic and thiocarbazic acid

There are provided substituted imidazo[1,5-d]-as-triazin-1(2H)-ones useful as anti-asthmatic agents.

Imidazo-[1,5-d]-as-triazin-1(2H)-ones and method of ameliorating asthma

There is provided substituted imidazo[1,5-d]-as-triazine-4(3H)-ones and substituted imidazo[1,5-d]-as-triazin-4(3H)-thiones useful as inhibitors of the enzyme cyclic-AMP phosphodiesterase and as broad spectrum herbicides.

Imidazo [1,5-d]-as-triazine-4(3H)-ones and thiones

There are provided novel substituted imidazo-[1,5-d]-as-triazines useful as hypotensive agents as well as exhibiting herbicidal activity.

Imidazo[1,5-d]-as-triazines

This disclosure describes novel 5-substituted imidazo[1,2-d]-as-triazines useful as anti-asthmatic agents and as inhibitors of the enzyme cyclic-AMP phosphodiesterase.

Substituted imidazo[1,2-d]-as-triazines

This disclosure describes 5-n-propyl-imidazo[1,2-d]-as-triazin-8(7H)-one and 5-phenyl-imidazo[1,2-d]-as-triazin-8(7H)-one which are useful as anti-asthmatic agents and as inhibitors of the enzyme cyclic-AMP phosphodiesterase.

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Tappan, NY, United States of America

Judith Menschik