pyrone


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py·rone

(pī'rōn),
A keto derivative of pyran.
Synonym(s): pyranone
References in periodicals archive ?
Amongst the three isomers (2-4), we found that compounds 2 and 3 were more active than compound 4 (Table 1), suggesting that the opening of the pyrone cycle in position C-31 may decrease the cytotoxic activity.
1) has a flavone nucleus composed of two benzene rings linked through a heterocyclic pyrone ring.
This basic structure is comprised of two benzene rings (A and B) linked through a heterocyclic pyran or pyrone (with a double bond) ring (c) in the middle.
Former structure activity relationship studies of styryl lactones indicated that the 6, 7-double bond on the pyrone ring or the chloration at 7-position is the more crucial structural requirement to increase the cytotoxicity (Bermejo et al.
Boonen G, Haberlein H (1998) Influence of genuine kava pyrone enatiomers on the GAB[A.
Kretzschmar R, Meyer HJ, Teschendorf HJ (1970) Strychnine antagonistic potency of pyrone compounds of the kava root (Piper methysticum).
Kava pyrones have been sold in Germany as OTC anxiolytics until June 2002, when all preparations with a kava pyrone content of more than [10.
Besides sedatives and antidepressants clinical studies of anxiolytic effects have also been published for kava pyrone preparations.
Ghosh BP, Mukerjee AK, Banerjee S (1955) New pyrone derivative, Cirantine, oral contraceptive.
Researchers have identified several pharmacologically active Kava pyrones, which have a primarily anxiolytic effect (e.