Asymmetric synthesis of 3-azide-4-fluoro-<scp>l</scp>-phenylalanine
作者:Masaatsu Adachi、Mado Nakajima、Minoru Isobe
DOI:10.1080/09168451.2014.997185
日期:2015.5.4
The asymmetric synthesis of N-Fmoc-protected 3-azide-4-fluoro-l-phenylalanine as a photoactive phenylalanineanalog has been achieved by Schöllkopf's alkylation.
Center-to-propeller stereocontrol in a family of macrobicyclic, double-propeller shaped tri-lambda(5)-triphosphazenes remains constant in the upper tribenzylamine fragment as the size of the pivotal group at the lower tris(phosphane) fragment is gradually increased. In contrast the propeller-to-propeller stereocontrol diminishes as a result of the increasing conformational lability in the lower hemisphere. (C) 2007 Elsevier Ltd. All rights reserved.
Helical Sense Bias Induced by Point Chirality in Cage Compounds
作者:Mateo Alajarín、Carmen López-Leonardo、Angel Vidal、José Berná、Jonathan W. Steed