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Synthesis of novel bioactive derivatives of 3-(4-chlorophenyl)-2-hydrazino-5,6,7,8-tetrahydrobenzo(b)thieno[2,3-d]pyrimidine-4(3H)-ones
Authors:Sunil V. Gupta, Kamalkishor Baheti, Rajesh Bora, Deepak Dekhane, Mahesh Chhabrí  a, Murlidhar Shingare, Shivaji Pawar, C.J. Shishoo,S.N. Thore,
Affiliation:aVinayakrao Patil Mahavidyalaya, Vaijapur Dist., Aurangabad 423 701, India;bY.B. Chavan College of Pharmacy, Rafiq Zakeria Complex, Aurangabad 431 001, India;cL.M. College of Pharmacy, Navrangpura, Ahmedabad 380 009, India
Abstract:A series of triazolo[4,3-a]tetrahydrobenzo(b)thieno[3,2-e]pyrimidine-5(4H)-ones (12an) were synthesized and evaluated for CNS depressant, skeletal muscle relaxant and anticonvulsant activities by photoactometer, Rotarod and pentylenetetrazole induced the convulsions method respectively in Swiss albino mice. Diazepam was used as standard drug. The five derivatives 12b, 12c, 12d, 12i and 12m showed the CNS depressant and skeletal muscle relaxant activities comparable to those of diazepam at a dose of 5 mg/kg. These derivatives also exhibited good activity when tested for anticonvulsant activity in mice at different dose levels. The ED50 values for these derivatives are in the range of 4.40–9.33 mg/kg.
Keywords:Thieno[3,2-e]pyrimidine   Pentylenetetrazole   Clonic convulsions   Skeletal muscle relaxant activity
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