- PHOTOCHEMICAL BEHAVIOUR OF 3,4-EPOXYPRECOCENE-I AND RELATED EPOXYCHROMANS
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A systematic study of photochemical behaviour of 3,4-epoxyprecocene-I and related epoxychromans was undertaken.Upon irradiation in acetone or cyclohexane, 3,4-epoxyprecocene-I 1 was found to undergo photoisomerisation to the corresponding 3-chromanone 2.In contrast, the photochemical behaviour of analogous 3,4-dihydro-3,4-epoxy-2H-1-benzopyrans 3 was found to be dependent upon the nature of solvent.Irradiation of 3 in cyclohexane led to photodecarbonylation leading to the formation of 2,3-dihydrobenzofurans 4, whereas irradiation in acetone resulted in the formation of chromanones 5.
- Ariamala, G.,Balasubramanian, K. K.
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- ANTAGONISTS OF THE TRPV1 RECEPTOR AND USES THEREOF
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The present application is directed to compounds that are TRPV1 antagonists and have formula (I) wherein variables Ar1, L1, R1, R2, R3, R4, R5, Y1, Y2, and Y3, are as defined in the description, which are useful for treating disorders caused by or exacerbated by vanilloid receptor activity.
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(2008/12/06)
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