chromene

(redirected from Benzopyran)
Also found in: Dictionary, Wikipedia.

chro·mene

(krō'mēn),
2H-1-benzopyran; fundamental unit of the tocopherolquinones.
See also: chroman, chromanol, chromenol.
References in periodicals archive ?
Preparing 3- methyl- 1- phenyl- 4-(3'- methyl- 1- phenyl- 4'- hydro- 5'- hydroxy- 5'- oxopyrazol- 4'- yl- pyrazolo [5, 4-d] - 4H-1- benzopyran (1b) Mp: 198-200 C (hexaneEt2O); 1H NMR (400 MHz, CDCl3) d 2.
Preparing 3- methyl- 1- phenyl- 4-(3'- propyl- 1- phenyl- 4', 5'- dihydro- 5'- oxopyrazol- 4'- yl- pyrazolo [5, 4-d]- 4H-1- benzopyran (1c) A crystal-white solid; Mp: 156-158 C (hexaneEt2O); 1H NMR (400 MHz, CDCl3) d 1.
Preparing 3- methyl- 1- phenyl- 4-(3'- propyl- 1- phenyl- 4'- hydro- 5'- hydroxy- 5'- oxopyrazol - 4'- yl- pyrazolo [5, 4-d]- 4H- 1- benzopyran (1d) A crystal-white solid; Mp: 189-190 C (hexaneEt2O); 1H NMR (400 MHz, CDCl3) d 1.
The formation of Pyrazolo [5, 4-d] benzopyran mechanism was shown in Fig.
The Libraries from Libraries" Principle for Diversity Enhancement of Benzopyran Libraries, J.
The metabolites investigated were dimeric phloroglucinol derivatives, benzophenones and benzopyrans.
carinatum, while benzopyrans 3, 4 and 5 were detected only in H.
It is noteworthy to notice that this is the only species that accumulate benzopyrans 3-5 (Table 3, Fig.
Bioassay-guided isolation of antimicrobial benzopyrans and phloroglucinol derivatives from Hypericum species.
cerasoides several prenylated benzopyran derivatives (Zafra-Polo et al.
Polyalthidin: new prenylated benzopyran inhibitor of the mammalian mitochondrial respiratory chain.
Within each skeletal group, compounds are ordered into hydrocarbons, acids, aldehydes, ketones, alcohols, esters, ethers, chlorinated compounds, benzofurans, benzopyrans, and nitrogen-containing compounds.