Photochemical In-Flow Synthesis of 2,4-Methanopyrrolidines: Pyrrolidine Analogues with Improved Water Solubility and Reduced Lipophilicity
作者:Vadym V. Levterov、Oleg Michurin、Petro O. Borysko、Sergey Zozulya、Iryna V. Sadkova、Andrey A. Tolmachev、Pavel K. Mykhailiuk
DOI:10.1021/acs.joc.8b02071
日期:2018.12.7
A practical synthesis of 2,4-methanopyrrolidines was elaborated. The key synthetic step was an intramolecular photochemical [2 + 2]-cycloaddition of an acrylic acid derivative in flow. In spite of a higher molecular weight, 2,4-methanopyrrolidines were shown to have higher solubility in water and lower lipophilicity than pyrrolidines, important characteristics of bioactive molecules in drug design
作者:Jeffrey G. Varnes、G. Scott Lehr、Gary L. Moore、James M. Hulsizer、Jeffrey S. Albert
DOI:10.1016/j.tetlet.2010.05.054
日期:2010.7
Using a modification of the route described by Clardy and Hughes et al., 2,4-methanoproline hydrochloride (1) was prepared in four steps and 70% overall yield from dl-serine methyl ester.