Preparation of nitramine-nitrates by ring-opening nitration of azetidines by dinitrogen pentoxide (N2O5)
作者:Peter Golding、Ross W. Millar、Norman C. Paul、David H. Richards
DOI:10.1016/0040-4020(95)98704-l
日期:1995.4
of substituents on the ring nitrogen, were treated with N2O5 in chlorinated solvents at sub-ambient temperature and in certain cases formed 1,3-nitramine-nitrate products by a novel ring-opening nitration reaction analogous to that established for aziridines. Yields of the nitramine-nitrates, where ring-opening took place, were generally moderate to high (41–88%), but azetidines bearing N-acyl substituents
在低于室温的温度下,在氯化溶剂中用N 2 O 5处理11个在环氮上带有各种取代基的氮杂环丁烷,在某些情况下,通过类似的新型开环硝化反应,形成1,3-硝胺-硝酸盐产物。到建立氮丙啶的水平。发生开环的硝酸硝胺硝酸盐的收率通常为中到高(41–88%),但带有N-酰基取代基(乙酰基,丁酰基或氨基甲酰基)的氮杂环丁烷则进行环外取代基的硝化反应以形成N -硝基氮杂环丁烷。同样,带有强吸电子基团(如苦味酚)的氮杂环丁烷对N 2 O 5呈惰性。与氮丙啶相比,氮杂环丁烷的不同反应性是根据四元环化合物的降低的环应变来合理化的。
Novel Composition for Treatment of Diseases Related to Activated Lymphocytes
申请人:Roth Stephen
公开号:US20090275557A1
公开(公告)日:2009-11-05
The present invention relates to inhibiting proliferation and inducing apoptosis in activated lymphocytes, including T cells and B cells. The invention also provides compositions and methods for inhibiting proliferation and inducing apoptosis in activated lymphocytes, as well methods for treating diseases associated with activated lymphocytes by administering 5-HT receptor antagonists.
Process for the preparation of an azetidine and intermediates therefor
申请人:A.H. ROBINS COMPANY, INCORPORATED
(a Delaware corporation)
公开号:EP0279543A1
公开(公告)日:1988-08-24
A novel process is described for preparing azetidine and 2 or 3 methyl and ethyl azetidine free bases by reacting primary arylmethylamine having suitable bulk providing substituents attached to the methyl carbon and an appropriate propane derivative having leaving groups in the one and three position in hot organic solvent containing a non-nucleophilic base and an amount of water sufficient to promote azetidine ring formation to give N-protected-azetidines and deprotecting by hydrogenolysis under acidic conditions to give an acid salt of the azetidines and thereafter flashing off vaporized azetidine from a hot, agitated strong base solution or slurry and condensing to give the liquid azetidine free bases.
Organopolysiloxanes and a method of setting hair using the same
申请人:KAO CORPORATION
公开号:EP0640643A2
公开(公告)日:1995-03-01
An organopolysiloxane which generates intramolecular or intermolecular cross-linking based on dipole-dipole interaction, hydrogen bonding or ion bonding, and which is not ruptured or plastically deformed at an extension ratio no more than 15% at a temperature of 20°C under relative humidity of 65%; and a method of setting hair using the same. Hair which is set by the method retains the given shape over time, and the organoplysiloxane imparts a soft touch to the hair.
In addition, the shape given by the setting treatment can be easily restored to the original shape by ordinary shampooing.
Emulsified, water-in-oil type composition and skin cosmetic preparation
申请人:KAO CORPORATION
公开号:EP0761202A2
公开(公告)日:1997-03-12
An emulsified, water-in-oil type composition comprises the following components (A), (B), (C) and (D):
(A) an oil phase,
(B) a high molecular compound having orientation to oil-water interfaces,
(C) a lower alcohol, and
(D) water.
A skin cosmetic preparation containing the emulsified, water-in-oil type composition is also disclosed.