Synthesis and biological evaluation of novel tert-azido or tert-amino substituted penciclovir analogs
作者:Hea Ok Kim、Hye Won Baek、Hyung Ryong Moon、Dae-Kee Kim、Moon Woo Chun、Lak Shin Jeong
DOI:10.1039/b401100g
日期:——
tert-Azido or amino substituted penciclovir analogs, 1–3 were synthesized for the purpose of improving the efficacy and bioavailability of penciclovir and searching for novel antiviral agents. Among several methods attempted to insert an azido group into the α,β-unsaturated ester 6, only Brønsted acid-catalysed 1,4-conjugate addition conditions (NaN3, 75% acetic acid, 80 °C) gave the desired tert-azido product 7. The synthesized final penciclovir analogs 1–3 were evaluated in vitro against several viruses such as HIV-1, HSV-1 and 2, poliovirus, VZV, and VSV. Compound 2 only showed weak antiviral activity against HSV-1 without cytotoxicity. Although the synthesized compounds did not exhibit an excellent antiviral activity, the successful method used in introducing the tert-azido group is expected to be generally utilized for the synthesis of nucleoside analogs with a tert-azido substituent.
为了提高喷昔洛韦的疗效和生物利用度以及寻找新型抗病毒药物,我们合成了 1-3 种叠氮或氨基取代的喷昔洛韦类似物。在尝试将叠氮基团插入 α、β-不饱和酯 6 的几种方法中,只有布氏酸催化的 1,4-共轭加成条件(NaN3、75% 乙酸、80 °C)得到了所需的叔叠氮产物 7。对合成的最终喷昔洛韦类似物 1-3 进行了体外抗多种病毒评估,如 HIV-1、HSV-1 和 2、脊髓灰质炎病毒、VZV 和 VSV。化合物 2 只对 HSV-1 表现出微弱的抗病毒活性,但没有细胞毒性。虽然合成的化合物没有表现出卓越的抗病毒活性,但引入叔叠氮基团的成功方法有望被普遍用于合成具有叔叠氮取代基的核苷类似物。