The invention provides diazo compounds having the formula XYCNN and their parent hydrazones, where X is an ortho-nitro aromatic group such as o-nitrophenyl and Y is a hydrocarbon group such as methyl. The hydrazones may be prepared by reacting the corresponding ketone with hydrazine and the diazo compounds by hydrazone oxidation. The diazo compound may be reacted with an organic compound having a reactive hydrogen atom such as phosphate, thiophosphate, phosphonate, carboxyl and phenol, to form a caged compound from which the original organic compound can be released by photolysis, eg in situ in a biological system. Preferred organic compounds are ATP and other nucleotides.
本发明提供了具有式 XYCNN 的重氮化合物及其母体肼酮,其中 X 为邻硝基苯基等正硝基芳香基团,Y 为甲基等烃基团。肼酮可通过相应的酮与肼反应制备,重氮化合物可通过腙氧化反应制备。重氮化合物可与具有活性氢原子(如磷酸盐、硫代磷酸盐、膦酸盐、羧基和苯酚)的有机化合物反应,形成笼状化合物,原有机化合物可通过光解(如在生物系统中的原位光解)从中释放出来。首选的有机化合物是 ATP 和其他核苷酸。
Liotta, Louis J.; Ganem, Bruce, Israel Journal of Chemistry, 1991, vol. 31, # 3, p. 215 - 222
作者:Liotta, Louis J.、Ganem, Bruce
DOI:——
日期:——
N-Alkylation of tosylhydrazones via a metal-free reductive coupling procedure
作者:Jin-Biao Liu、Hui Yan、Gui Lu
DOI:10.1016/j.tetlet.2012.11.124
日期:2013.2
A simple metal-free route for the N-alkylation of tosylhydrazones is described via the NaOMe-promoted reductive coupling of tosylhydrazones under mild conditions. A wide variety of N-alkylated tosylhydrazones were obtained in moderate to good yields. (C) 2012 Elsevier Ltd. All rights reserved.
IKEHBARA, MORIO
作者:IKEHBARA, MORIO
DOI:——
日期:——
CALCIUM SEQUESTRATION COMPOSITIONS AND METHODS OF TREATING SKIN PIGMENTATION DISORDERS AND CONDITIONS
申请人:Neocuitis S.A.
公开号:US20160030321A1
公开(公告)日:2016-02-04
The present invention provides compositions containing one or more calcium sequestration agents and methods for topical application of such compositions to the skin to treat skin pigmentation disorders, such as melasma, post-inflammatory hyperpigmentation, pigmentation changes due to skin aging, or any other skin conditions related with normal such as skin of color or abnormal pigmentation such as hypo- or hyper-pigmentation in humans.