189498-44-0Relevant articles and documents
A practical and efficient synthesis of (3R,4S)-1-benzyl-4- phenylpyrrolidine-3- carboxylic acid via an aziridinium ion intermediate
Ohigashi, Atsushi,Kikuchi, Takashi,Goto, Shunsuke
scheme or table, p. 127 - 132 (2010/04/29)
A practical and efficient synthesis of (3R,4S)-1-benzyl4-phenylpyr- rolidine-3-carboxylic acid (1), a key chiral building block for synthesis of biologically active compounds was established by utilizing a stereospecific and regioselective chlorination of in situ generated aziridinium ion, followed by a nitrile anion cyclization. Starting from commercially available (R)-styrene oxide and 3-(benzylamino)propionitrile, the four-step synthesis features a through process without purification of intermediates until isolation of crystalline 1. The robust, chromatography-free and reproducible synthesis of 1 achieved an 84% overall yield from (R)-styrene oxide. This highly efficient process was successfully demonstrated at pilot scale with 17 kg output of 1.
SPIRO COMPOUNDS AND METHODS FOR THE MODULATION OF CHEMOKINE RECEPTOR ACTIVITY
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Page/Page column 104-105, (2010/02/11)
Compounds of formula I insert formula I from claim 1 wherein X, Y, Z, W, R1 and R2 as defined herein, or pharmaceutically acceptable salts, hydrates or solvates thereof, are useful for the modulation of CCR5 chemokine receptor activity.