Application of 1-tert-butoxy-3-[(trimethylsilyl)oxy]buta-1,3-diene in the preparation of functionalized .beta.-hydroxycyclohexanone derivatives, including valuable precursors of daunomycinone analogs
A two-step procedure is described to access 3-alkoxycyclobutanones fromchloroacetylchloride utilizing a step-wise [2+2] ketene cycloaddition followed by catalytic hydrogenation to reduce the α-chlorine in a single reaction sequence. The resulting cyclobutanones can be readily converted into a variety of cis or trans-1,3-disubstituted aminocyclobutanols and cyclobutanediols.
PYRROLONE OR PYRROLIDINONE MELANIN CONCENTRATING HORMONE RECEPTOR-1 ANTAGONISTS
申请人:Bristol-Myers Squibb Company
公开号:US20150218092A1
公开(公告)日:2015-08-06
The present invention provides compounds of Formula (I): as defined in the specification and compositions comprising any of such novel compounds. These compounds are melanin concentrating hormone receptor-1 (MCHR1) antagonists which may be used as medicaments.
[EN] PYRROLONE OR PYRROLIDINONE MELANIN CONCENTRATING HORMONE RECEPTOR-1 ANTAGONISTS<br/>[FR] ANTAGONISTES DU RÉCEPTEUR 1 D'HORMONE CONCENTRANT LA MÉLANINE DE TYPE PYRROLONE OU PYRROLIDINONE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014039412A8
公开(公告)日:2015-10-15
Bicyclo[1.1.0]butanes from ketene and vinyl ethers