Two total syntheses of the potent protein kinase C inhibitory fungal metabolite balanol are described. In the first approach, the core aminohydroxyazepane subunit was prepared in racemic form by stereospecific functionalization of N-benzyl-epsilon-caprolactam. Resolution prior to coupling to the benzophenone subunit provided access to both enantiomers of balanol. In the second approach, an efficient silicon-mediated cyclization of(2S,3R)-3-hydroxylysine followed by reduction provided the azepane subunit in enantiomerically pure form. The sterically congested benzophenone subunit was assembled from two highly substituted aromatic precursors by way of an anionic home-Fries rearrangement.
Bifunctional Iminophosphorane-Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α,β-Unsaturated Amides
作者:Daniel Rozsar、Michele Formica、Ken Yamazaki、Trevor A. Hamlin、Darren J. Dixon
DOI:10.1021/jacs.1c11898
日期:2022.1.19
unactivated α,β-unsaturatedamides is described. Consistently high enantiomeric excesses and yields were obtained over a wide range of alkyl thiol pronucleophiles and electrophiles under mild reaction conditions, enabled by a novel squaramide-based bifunctional iminophosphorane catalyst. Low catalyst loadings (2.0 mol %) were achieved on a decagram scale, demonstrating the scalability of the reaction. Computational
Two efficient syntheses of (±)-anti-N-benzyl-3-amino-4-hydroxyhexahydroazepine
作者:Hong Hu、G. Erik Jagdmann、Philip F. Hughes、Jeffrey B. Nichols
DOI:10.1016/0040-4039(95)00623-k
日期:1995.5
Functionalization of ε-caprolactam (3) or Beckmann rearrangement of the syn-oxime derivative of 3-ethoxy-2-cyclohexen-1-one (12) provided efficient and high-yielding syntheses of (±)-anti-N-benzyl-3-amino-4-hydroxyhexahydroazepine (2), a key intermediate for the syntheses of racemic balanol and its analogs.
The present invention is directed to caprolactams which are positive allosteric modulators of metabotropic glutamate receptors, particularly the mGluR5 receptor, and which are useful in the treatment or prevention of neurological and psychiatric disorders associated with glutamate dysfunction and diseases in which metabotropic glutamate receptors are involved. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which metabotropic glutamate receptors are involved.
Verbessertes Verfahren zur Herstellung von Hexahydroazepinonen und Hexahydroazepinolen
申请人:ASTA Medica Aktiengesellschaft
公开号:EP0659744B1
公开(公告)日:2001-02-28
[EN] CAPROLACTAM MGLUR5 RECEPTOR MODULATORS<br/>[FR] MODULATEURS CAPROLACTAMES DES RÉCEPTEURS MGLUR5
申请人:MERCK SHARP & DOHME
公开号:WO2012058128A2
公开(公告)日:2012-05-03
The present invention is directed to caprolactams which are positive allosteric modulators of metabotropic glutamate receptors, particularly the mGluR5 receptor, and which are useful in the treatment or prevention of neurological and psychiatric disorders associated with glutamate dysfunction and diseases in which metabotropic glutamate receptors are involved. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which metabotropic glutamate receptors are involved.