Synthesis of Enantiopure Highly Functionalized Pyrrolizines and Indolizines from Natural α-Amino Acids: An Experimental and Theoretical Investigation
作者:Elena Borsini、Gianluigi Broggini、Alessandro Contini、Gaetano Zecchi
DOI:10.1002/ejoc.200701217
日期:2008.6
Variously substituted enantiopure 2-benzylamino-1-hydroxymethyl-2,3-dihydro-1H-pyrrolizines and 6-benzylamino-5,6,7,8-tetrahydroindolizin-8-ols have been prepared. The reaction sequence starts from L-α-amino acids and involves an intramolecular cycloaddition of pyrrole-based nitrone intermediates. A theoretical investigation at the HCTH/6-311+G(d,p)//HCTH/6-31+G(d) level of theory was performed with
已经制备了各种取代的对映体纯 2-benzylamino-1-hydroxymethyl-2,3-dihydro-1H-pyrrolizines 和 6-benzylamino-5,6,7,8-tetrahydroindolizin-8-ols。反应序列从 L-α-氨基酸开始,涉及基于吡咯的硝酮中间体的分子内环加成。在 HCTH/6-311+G(d,p)//HCTH/6-31+G(d) 理论水平上进行了理论研究,目的是使取代基对环加成反应区域化学的影响合理化.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)