作者:Ling-Chun Yang、Guan-Xin Zhang、Nan-Zhi Zou、Chuan-Min Qi
DOI:10.1002/jhet.5570400623
日期:2003.11
A series of Losartan analogues 1-12 with different functional groups were synthesized and characterized. In comparison with the previous reports, the synthetic procedures described in this paper have been optimized as follows below: 1) preparation of aromatic amine 15 and 18 through hydrogenation by employing Raney Ni and hydrazine as catalysts in place of palladium; 2) preparation of nitro-compound
合成并表征了具有不同官能团的一系列洛沙坦类似物1-12。与以前的报告相比,本文描述的合成方法在以下方面进行了优化:1)通过使用阮内镍和肼代替钯作为催化剂,通过氢化制备芳族胺15和18。2)在-20--15℃下用纯发烟硝酸制备硝基化合物17。3)在氢化钠的存在下代替叔丁酸钾,用22或23将21烷基化。4)制备羧酸4 通过酯裂解而不是氰基水解。