AbstractA convenient preparation of 1-(pyrrolidin-2-yl)-1H-pyrazoles, -imidazoles, and -1H-1,2,4-triazoles, 1-(piperidin-2-yl)-1H-pyrazoles and -1H-1,2,4-triazoles, and 1-(piperidin-3-yl)-1H-1,2,4-triazoles by alkylation of azoles (viz. pyrazoles, imidazoles, and triazoles) with N-Cbz-prolinol mesylate or its analogues and subsequent deprotection is reported. The two-step method allows for synthesis of the title compounds in 16–65% yields. The utility of the procedure has been demonstrated by multigram preparation of a 15-member building block mini-library for the lead-oriented synthesis of compound libraries. These building blocks perfectly fit the definition of low-molecular-weight hydrophilic three-dimensional templates, which leave much room for the lead-oriented synthesis of the compound libraries.
摘要:报道了通过与N-Cbz-脯氨醇甲磺酸盐或其类似物烷基化,然后去保护的方法,方便地制备1-(吡咯啉-2-基)-1H-吡唑,-咪唑和-1H-1,2,4-三唑,1-(哌啶-2-基)-1H-吡唑和-1H-1,2,4-三唑,以及1-(哌啶-3-基)-1H-1,2,4-三唑。这种两步法允许在16-65%的产率下合成标题化合物。该方法的实用性已通过制备15个成员构建块迷你库,用于导向合成化合物库的首导合成,得到了证明。这些构建块完全符合低分子量亲水性三维模板的定义,为化合物库的首导合成留下了很大的空间。