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QSAR analysis based on classical Hansch approach was adopted on two recently reported novel series of 2-phenylpyran-4-ones as selective cyclooxygenase-2 (COX-2) inhibitors. The 6-methyl derivatives of title compounds bifurcate as 3-phenoxypyran-4-ones (subset A) and 3-phenylpyran-4-ones (subset B) among series 1. Series 2 consists of 5-chloro derivatives of title compounds. Various regression equations...
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