199329-49-2Relevant academic research and scientific papers
Catalytic asymmetric intramolecular homologation of ketones with α-diazoesters: Synthesis of cyclic α-Aryl/Alkyl β-ketoesters
Li, Wei,Tan, Fei,Hao, Xiaoyu,Wang, Gang,Tang, Yu,Liu, Xiaohua,Lin, Lili,Feng, Xiaoming
supporting information, p. 1608 - 1611 (2015/01/30)
A catalytic asymmetric intramolecular homologation of simple ketones with α-diazoesters was firstly accomplished with a chiral N,N′-dioxide-Sc(OTf)3 complex. This method provides an efficient access to chiral cyclic α-aryl/alkyl β-ketoesters containing an all-carbon quaternary stereocenter. Under mild conditions, a variety of aryl- and alkyl-substituted ketone groups reacted with α-diazoester groups smoothly through an intramolecular addition/rearrangement process, producing the β-ketoesters in high yield and enantiomeric excess.
INHIBITION OF MATRIX METALLOPROTEASES BY 2-(OMEGA-AROYLALKYL)-4-BIARYL-OXOBUTYRIC ACIDS
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, (2008/06/13)
The present invention provides pharmaceutical compositions and methods for treating certain conditions comprising administering an amount of a compound or composition of the invention which is effective to inhibit the activity of at least one matrix metal
