A one-pot reaction to synthesize functionalized 2H-azirines through visible-light-mediated ring contraction and olefinmetathesis of isoxazoles is described. Hoveyda–Grubbs II catalyst was found to function as a photocatalyst for these transformations, allowing these processes to be carried out in a one-pot manner. This study offers a new entry for the application of Grubbs catalysts as efficient photocatalysts
chemoselective reaction between 5-aminoisoxazoles and α-diazocarbonyl compounds has been described. Both Wolff rearrangement and N–H insertion products can be obtained selectively by the judicious choice of reaction conditions. In the case of the Wolff rearrangementreactions, the N-isoxazole amides are accessed as the sole products under thermal conditions. On the other hand, α-amino acid derivatives
The study of reactions of α-chlorocinnamonitriles with hydroxylamine
作者:V. G. Nenajdenko、I. V. Golubinskii、O. N. Lenkova、A. V. Shastin、E. S. Balenkova
DOI:10.1007/s11172-006-0029-1
日期:2005.7
The E-isomers of α-chlorocinnamonitriles react with hydroxylamine to give a mixture of isomeric aminoisoxazoles, while the Z-isomers yield 3-aryl-2-chloroacrylamide oximes.
α-氯肉桂腈的E异构体与羟胺反应生成一 mixture of isomeric aminoisoxazoles,而Z异构体则产生3-芳基-2-氯丙烯酰胺肟。
Kong, Yung Cheol; Kim, Kyongtae; Park, Yung Ja, Heterocycles, 2001, vol. 55, # 1, p. 75 - 89
作者:Kong, Yung Cheol、Kim, Kyongtae、Park, Yung Ja
DOI:——
日期:——
Metalloprotease inhibitors containing a squaramide moiety
申请人:Gege Christian
公开号:US20080221128A1
公开(公告)日:2008-09-11
The present invention relates generally to pharmaceutical agents containing a heterocyclic moiety, and in particular, to heterocyclic metalloprotease inhibiting compounds. More particularly, the present invention provides a new class of heterocyclic MMP-3, MMP-8 and/or MMP-13 inhibiting compounds with a squaramide or benzoxazinone moiety, that exhibit an increased potency and selectivity in relation to currently known MMP-13, MMP-8 and MMP-3 inhibitors.