Synthesis of Monosubstituted Succinic Acids from tert-Butylsuccinate
作者:Stephen C. Bergmeier、Khadiga A. Ismail
DOI:10.1055/s-2000-7110
日期:——
We report the preparation and alkylation of the dianion of t-butylsuccinate. This alkylation reaction has proven to be a useful method for the preparation of monosubstituted succinic acids and anhydrides.
Structure activity studies of ring E analogues of methyllycaconitine. Part 2: Synthesis of antagonists to the α3β4* nicotinic acetylcholine receptors through modifications to the ester
作者:Stephen C Bergmeier、Khadiga A Ismail、Kristjan M Arason、Susan McKay、Darrell L Bryant、Dennis B McKay
DOI:10.1016/j.bmcl.2004.05.001
日期:2004.7
number of simpler analogues of the norditerpeniod alkaloid methyllycaconitine (MLA) in an effort to understand molecular determinants of nAChR*small molecule interactions. We have previously reported the synthesis and evaluation of a series of ring Eanalogues of MLA. We report here the optimization of the alpha3beta4* functional activity of this series of compounds through modification of the ester.
Studies concerning the antibiotic actinonin. Part III. Synthesis of structural analogues of actinonin by the anhydride–imide method
作者:John P. Devlin、W. David Ollis、John E. Thorpe、Ronald J. Wood、Barbara J. Broughton、Peter J. Warren、Kenneth R. H. Wooldridge、Derek E. Wright
DOI:10.1039/p19750000830
日期:——
A synthetic route, associated with a high degree of stereoselectivity, has been developed for the synthesis of structuralanalogues (XIII) of actinonin (I). The anhydride–imide method involves the sequence (IIIb)+(V)→[(VI)+(VII)]→(XI)→(XIII). (±)-Amino-amides (IIIb) yielded the (±)-hydroxamic acids with the relative configuration (XIII) and L-amino-amides (X) yielded single enantiomers with the absolute