Conversion of .beta.-amino esters to .beta.-lactams via tin(II) amides
摘要:
Addition of Sn[N(TMS)2]2 to beta-amino esters with sterically nondemanding substituents at C3 or on nitrogen gave beta-lactams in 76-100% yield. More sterically demanding beta-amino esters could be converted to beta-lactams in excellent yield using unsymmetrical tin(II) amide reagents which were prepared in situ. Optimal results for the in situ procedure involved addition of Sn[N(TMS)2]2 to a beta-amino ester, followed by addition of either pivalic acid or N-tert-butylacetamide.
[EN] PYRIMIDINE DERIVATIVES AS PROTEIN KINASE INHIBITORS<br/>[FR] DÉRIVÉS DE PYRIMIDINE COMME INHIBITEURS DE PROTÉINE KINASES
申请人:CYCLACEL LTD
公开号:WO2009040556A1
公开(公告)日:2009-04-02
The present invention relates to a compound of formula (VII)I, or a pharmaceutically acceptable salt or ester thereof, wherein: X is NR7; Y is O or N-(CH2)nR19; n is 1, 2 or 3; m is 1 or 2; R1 and R2 are each independently H, alkyl or cycloalkyl; R4 and R4' are each independently H or alkyl; or R4 and R4' together form a spiro cycloalkyl group; R19 is H, alkyl, aryl or a cycloalkyl group; R6 is OR8 or halogen; and R7 and R8 are each independently H or alkyl. Further aspects relate to pharmaceutical compositions comprising said compounds and use therefore in the treatment of proliferative disorders and the like.
PYRIMIDINE DERIVATIVES AS PROTEIN KINASE INHIBITORS
申请人:Hollick Jonathan James
公开号:US20110046093A1
公开(公告)日:2011-02-24
The present invention relates to a compound of formula (VII)I, or a pharmaceutically acceptable salt or ester thereof, wherein: X is NR
7
; Y is O or N—(CH
2
)
n
R
19
; n is 1, 2 or 3; m is 1 or 2; R
1
and R
2
are each independently H, alkyl or cycloalkyl; R
4
and R
4′
each independently H alkyl; or R
4
and R
4′
together form a spiro cycloalkyl group; R
19
is H, alkyl, aryl or a cycloalkyl group; R
6
is OR
8
or halogen; and R
7
and R
8
are each independently H or alkyl. Further aspects relate to pharmaceutical compositions comprising said compounds and use therefore in the treatment of proliferative disorders and the like.
Pyrimidine derivatives as protein kinase inhibitors
申请人:Cyclacel Limited
公开号:EP2610256A1
公开(公告)日:2013-07-03
The present invention relates to 6-oxo-6,7,8,9-tetrahydro-5H-pyrimido[4,5-b][1,4]diazepine derivatives. Further aspects relate to pharmaceutical compositions comprising said compounds and use therefore in the treatment of proliferative disorders and the like.