Synthesis and Antiretroviral Evaluation of Derivatives of Zidovudine
نویسندگان
چکیده
Uma série de novos carbamatos de zidovudina (AZT, 1) foi sintetizada, caracterizada e avaliada em relação a sua atividade anti-HIV e citotoxicidade. O grupo hidroxila da posição 5’ do AZT foi derivatizado usando-se N, N’-carbonildiimidazol e diferentes aminas para gerar os respectivos 5’-O-carbamatos. Além disso, dois derivados já conhecidos foram sintetizados, um 5’-O-tosilato e um derivado tricíclico (AZT-Cycl), empregando-se métodos mais rápidos e simples do que os previamente reportados. Embora os novos derivados tenham apresentado menor toxicidade do que o AZT, essa redução na citotoxicidade foi concomitante com a marcada diminuição para inibir a replicação do vírus, com exceção do AZT-Cycl, o qual, mesmo apresentando IC 50 = 1 μmol L, não demonstrou sinais de citotoxicidade com valores de CCID 50 (μmol L) > 1000.
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