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Benzopyran derivatives and their use as anti-hypertensives

TLDR
In this article, the derivatives of the benzopyran derivatives of formula (I) wherein the substituents are as defined herein are provided, and the compounds possess vasodilating activity and are useful in the treatment of hypertension.
Abstract
Benzopyran derivatives of formula (I) wherein the substituents are as defined herein are provided. The compounds possess vasodilating activity and are useful in the treatment of hypertension. Pharmaceutical compositions and methods of treating hypertension are also provided.

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Aryl urea and related compounds

TL;DR: In this article, the authors defined a set of compounds having the formula "STR1##" and pharmaceutically acceptable salts thereof, where X is a single bond, O, CO, S, NH or N(lower alkyl); Y is O, S or NCN; and R1 to R5' are as defined herein.
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Pyranyl cyanoguanidine derivatives

TL;DR: Novel compounds having the formula (See formula I) wherein R1-R9 are as described herein, are useful as antiischemic agents as discussed by the authors. But they are difficult to synthesize.
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4-arylamino-benzopyran and related compounds

TL;DR: In this paper, the authors define a class of compounds having the formula "STR1## and pharmaceutically acceptable salts thereof" where X is alkyl, Y is a single bond.
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TL;DR: In this article, the substituents of Formula (I) are defined as useful as therapeutic agents, which are useful as pharmaceutical agents, such as prodrugs thereof, metabolites thereof, isomers thereof, enantiomers thereof and enantiomer thereof.
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Novel benzopyran derivatives, processes for their preparation and their use and preparations containing the compounds

TL;DR: In this paper, the derivatives of the general formula I ##STR1## wherein the substituents are as defined herein are provided, and they show vasodilating and vascular spasmolytic activity and are useful in treating hypertension.
References
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Pharmaceutically active benzopyran compounds

TL;DR: In this article, the amino moiety was substituted by one or two alkyl groups, or alkylsulphinylamino or alkoxysulphinelamino.
Patent

Anti-hypertensive chromanol derivatives

TL;DR: The NR4 R5 and OR3 moieties are trans having antihypertensive activity, pharmaceutical compositions containing them and processes for their preparation as discussed by the authors, and the NR4 OR3 is trans containing them.
Patent

Anti-hypertensive chromans and chromenes

TL;DR: In this paper, the amino moiety was substituted by one or more groups or atoms selected from the class of C 1-6 alkyl, C 2-7 alkanoyl.
Patent

Pharmaceutically active aminobenzopyrans

John M. Evans
TL;DR: In this paper, the class of compounds with anti-hypertensive activity is defined, where the amino moiety can be substituted by one or more than two C 1-6 alkyl groups.
Patent

Chromans and chromenes, compositions and hypertensive method

TL;DR: A pharmaceutically acceptable salt or solvate thereof having anti-hypertensive activity, a process for their preparation and their use as pharmaceuticals is described in this article.
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