Author： Murugavel K. Amirthaganesan S. Sabapathy Mohan R.
Publisher： Springer Publishing Company
ISSN： 0009-3122
Source： Chemistry of Heterocyclic Compounds, Vol.46, Iss.3, 2010-07, pp. : 302-306
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Abstract
A new series of t-4-aryl-3,c-6-dihydroxy-6-methyl-4,5,6,7-tetrahydro-1H-indazole-r-5-carboxylic acid isopropyl esters has been synthesized by adopting a conventional method from cyclic β-keto esters. 1H, 13C NMR, and IR spectra for all the compounds were investigated. HMBC, HSQC, COSY, and NOESY spectra of the representative compounds were studied. The stereochemistry of a six-membered ring of the fused indazoles resembled that of keto esters. From the HMBC correlations the indazole structure was confirmed as 1H-indazole.
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