Stereocontrolled construction of substituted pyrrolidines based on intramolecular protodesilylation reaction. Enantiospecific synthesis of (–)-kainic acid and (+)-allokainic acid fromL-serine
Method of producing halogenated and alpha-aminoalchohols
申请人:Hoffmann-La Roche Inc.
公开号:US05523463A1
公开(公告)日:1996-06-04
A process for the manufacture of N-protected .alpha.-aminoketones and N-protected .alpha.-aminoalcohols of the formula ##STR1## wherein X is halogen, one of Q.sup.1 and Q.sup.2 is hydrogen and the other is hydroxy or Q.sup.1 and Q.sup.2 together are oxo, R.sup.1 is an amino protecting group and R.sup.2 is hydrogen or the characterizing group of an .alpha.-aminocarboxylic acid, starting from the corresponding lower alkyl N-protected .alpha.-aminocarboxylates via corresponding lower alkyl N-silyl protected .alpha.-aminocarboxylates.
Process for a phenylthiobutyl-isoquinoline and intermediates therefor
申请人:Hoffmann-La Roche Inc.
公开号:US06130348A1
公开(公告)日:2000-10-10
The present invention relates to a new method for making compounds of formula ##STR1## and intermediates for making compounds of formual II. The compounds of this invention are useful intermediates for the manufacture of pharmacologically active compounds suitable for the treatment of viral infections, particularly, those caused by HIV and other retroviruses.
New process for a phenylthiobutyl-isoquinoline and intermediates therefor
申请人:——
公开号:US20010018538A1
公开(公告)日:2001-08-30
A method for making phenylthiobutyl-isoquinoline compounds of formula
1
and novel intermediates therefor.
一种制备式1苯基硫基丁基异喹啉化合物的方法及其新的中间体。
Verfahren zur Herstellung von halogenierten Alpha-Amino-Ketonen und Alpha-Amino-Alkoholen
申请人:F. Hoffmann-La Roche AG
公开号:EP0703209A2
公开(公告)日:1996-03-27
Verfahren zur Herstellung von N-geschützten α-Aminoketonen und N-geschützten α-Aminoalkoholen der Formel
worin X Halogen, eins von Q¹ und Q² Wasserstoff und das andere Hydroxy oder Q¹ und Q² zusammen Oxo, R¹ eine Aminoschutzgruppe und R² Wasserstoff oder die charakterisierende Gruppe einer α-Aminocarbonsäure bedeuten,
ausgehend von den entsprechenden N-geschützten α-Aminocarbonsäure-niederalkylester, via entsprechenden N-silylgeschützten α-Aminocarbonsäure-niederalkylester.
Enantiospecific synthesis of R-and S-5,6-dihydroxy-2- (N,N-DI-n-propylamino)tetralins from serine.
作者:A.D. Baxter、P.J. Murray、R.J.K. Taylor
DOI:10.1016/s0040-4039(00)74203-1
日期:1992.4
The first enantiospecific synthesis of 5,6-dihydroxy-2-(NN-di-n-propylamino)tetralin [5,6-(HO)2DPAT] is reported. Starting from D- or L-serine either enantiomer is readily available in high optical purity.