Topic
Benzopyrans
About: Benzopyrans is a research topic. Over the lifetime, 694 publications have been published within this topic receiving 8830 citations.
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Patent•
21 Mar 1985TL;DR: Novel substituted 4-hydroxy-benzopyrans of the formula "STR1" in which X is a single bond can have various meanings, or pharmaceutically acceptable addition salts thereof, which are active on the circulation system as mentioned in this paper.
Abstract: Novel substituted 4-hydroxy-benzopyrans of the formula ##STR1## in which X is a single bond, ##STR2## and the other radicals can have various meanings, or pharmaceutically acceptable addition salts thereof, which are active on the circulation system.
9 citations
9 citations
9 citations
Patent•
26 Oct 1988
TL;DR: In this article, novel benzopyrans having pharmacological activity, to a process for preparing them, to pharmaceutical compositions containing them, and to their use in the treatment of hypertension are presented.
Abstract: Disclosed herein are novel benzopyrans having pharmacological activity, to a process for preparing them, to pharmaceutical compositions containing them, and to their use in the treatment of hypertension.
9 citations
Patent•
30 Nov 1998
TL;DR: In this paper, the photochromic pyrano-fused naphthopyran compounds are described, examples of which are NPHO compounds having a substituted or unsubstituted 'S' pyran ring.
Abstract: Described are novel photochromic pyrano-fused naphthopyran compounds, examples of which are naphthopyran compounds having a substituted or unsubstituted 'S' pyran ring, the 3,4 positions of which are fused to the f side of the naphtho portion of the naphthopyran, and certain substituents at the 2-position of the 'T' pyran ring. Certain substituents may also be present at the number 5, 7, 8, 9, 10, 11 or 12 carbon atoms of the compounds. These compounds may be represented by graphic formula (I). Also described are polymeric organic host materials that contain or that are coated with such compounds or combinations thereof with complementary photochromic compounds, e.g., certain other naphthopyrans, benzopyrans, and spiro(indoline) type compounds.
9 citations