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4,5,6,7-Tetrahydrothieno pyridine is an important class of heterocyclic nucleus. Various 4,5,6,7-tetrahydrothieno pyridine derivatives have been synthesized and evaluated for various biological activities in different models with desired findings. Some analogs have shown potent biological activities and may be considered as lead molecule for the development of future drugs. Number of drug molecules are available in the market and many molecules are in clinical development containing 4,5,6,7-tetrahydrothieno pyridine nucleus as an important core. This review is an attempt to organize the chemical and biological aspects of 4,5,6,7-tetrahydrothieno pyridine analogs reported in last 20 year to till date. Review mainly focuses on the important role of the core in synthesis of drug or drug intermediates giving emphasis on synthetic schemes and biological activities of the different 4,5,6,7-tetrahydrothieno pyridine analogs.

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A product stream for phenol production along with p-xylene and alkenes was achieved using 1.5 wt% Zn/Si/HZSM-5.

Review: 109 refs.

Review: 147 refs.

Oxalic acid as a cheap and easily available catalyst is used for the intramolecular cyclization of 2-hydroxychalcones to flavones (II). -(ZAMBARE, A. S.; SANGSHETTI, J. N.; KOKARE, N. D.; SHINDE*, D. B.; Chin.