Estrogen receptor ligands. Part 9: Dihydrobenzoxathiin SERAMs with alkyl substituted pyrrolidine side chains and linkers
作者:Timothy A. Blizzard、Frank DiNinno、Jerry D. Morgan、Helen Y. Chen、Jane Y. Wu、Seongkon Kim、Wanda Chan、Elizabeth T. Birzin、Yi Tien Yang、Lee-Yuh Pai、Paula M.D. Fitzgerald、Nandini Sharma、Ying Li、Zhoupeng Zhang、Edward C. Hayes、Carolyn A. DaSilva、Wei Tang、Susan P. Rohrer、James M. Schaeffer、Milton L. Hammond
DOI:10.1016/j.bmcl.2004.10.036
日期:2005.1
A series of dihydrobenzoxathiin SERAMs with alkylated pyrrolidine side chains or alkylated linkers was prepared. Minor modifications in the side chain or linker resulted in significant effects on biological activity, especially in uterine tissue.
Enantioselective Addition of Diethylzinc to Aromatic Aldehydes Catalyzed by Pyrolidine and Piperidine <font>β</font>-Amino Alcohols
The enantioselective alkylation of aryl aldehydes by diethylzinc in the presence of catalytic amounts of several chiral pyrolidine- and piperidine-based amino alcohol ligands, synthesized from the reaction of (R)-2-amino-1-butanol and (S)-2-amino-3-phenylpropan-1-ol with appropriate dibromoalkanes, was studied. The influence of temperature and ligand structure has been investigated. Addition of diethylzinc to aromatic aldehydes under the optimized condition gave the corresponding products in excellent yields with ee values of up to 77%.
Synthesis and Characterization of the First Pyrrolidine‐Based Chiral Ionic Liquids
作者:C. M. Haricharan Raju、P. K. Dubey、Palle V. R. Acharyulu
DOI:10.1080/00397910801916140
日期:2008.4
The first example of pyrrolidine-based room-temperature chiral ionic liquids using 2-aminobutanol as chiral auxiliary is described.