SALT, PHOTORESIST COMPOSITION AND METHOD FOR PRODUCING PHOTORESIST PATTERN
申请人:YOSHIDA Isao
公开号:US20130052588A1
公开(公告)日:2013-02-28
A photoresist composition containing a resin that is hardly soluble or insoluble, but which is soluble in an aqueous alkali solution by action of an acid, and a salt represented by formula (I):
wherein Q
1
, Q
2
, L
1
, W
1
, W
2
, R
1
, R
2
, t1 and t2 are defined in the specification, and Z
+
represents an organic cation.
Copper(II) bromide as an efficient catalyst for acetal to bisarylmethyl ether interconversion
作者:Rofia Mezaache、Hassina Harkat、Julie Obszynski、Abdelhamid Benkouider、Aurélien Blanc、Jean-Marc Weibel、Patrick Pale
DOI:10.1016/j.tetlet.2014.10.115
日期:2014.12
efficiently achieved in the presence of copper dibromide as catalyst in acetonitrile at room temperature. Acetals are conveniently and selectively converted to the corresponding mono-protected diol with bis(methoxyphenyl)methyl isopropyl ether (BMPMOiPr) as the reagent. This new practical reagent allows the BMPM transfer to 1,3-dioxolanes or 1,3-dioxanes under copper catalysis. The reaction conditions are
在室温下,在乙腈中作为催化剂的二溴化铜存在下,可以有效地实现乙缩醛向双(甲氧基苯基)甲基(BMPM)醚的反保护。使用双(甲氧基苯基)甲基异丙基醚(BMPMO i Pr)作为试剂,可以方便地将乙缩醛选择性地转化为相应的单保护二醇。这种新的实用试剂可在铜催化下将BMPM转移至1,3-二氧戊环或1,3-二氧六环。反应条件也非常温和并且耐受包括其他保护基团在内的各种官能团。
3-CARBAMOYL-2-PYRIDONE DERIVATIVES
申请人:ISHIZUKA Natsuki
公开号:US20120208813A1
公开(公告)日:2012-08-16
The present invention provides compounds having an agonistic activity to the cannabinoid receptor, which is represented by the formula (I):
wherein R
1
, R
2
, R
3
, R
4
, and G are defined as herein, a pharmaceutically acceptable salt or a solvate thereof, and pharmaceutical compositions, atopic dermatitis treating agents, and anti-pruritus agents, especially anti-pruritus agents for oral used and for external application, which each contains the said compound as an active ingredient.
Lipase-mediated desymmetrization of glycerol with aromatic and aliphatic anhydrides
作者:Daniela I. Batovska、Shuichirou Tsubota、Yasuo Kato、Yasuhisa Asano、Makoto Ubukata
DOI:10.1016/j.tetasy.2004.09.033
日期:2004.11
Chirazyme L-2 (Candida antarctica) catalyzed esterification of glycerol with aromatic and aliphatic anhydrides in 1,4-dioxane is described. All the aromatic monoacylglycerols (MAGs) were produced as (R)-enantiomers, while aliphatic MAGs were obtained either as racemic mixtures or the (S)-enantiomers. The influence of substituted aromatic rings, chain length, and presence of a conjugated double bond in the acyl donor moiety on the enantiotopic selectivity as well as the efficiency of the enzyme was studied. (C) 2004 Elsevier Ltd. All rights reserved.