Oxime Esters as Acylating Agents in the Aminolysis Reaction. A Simple and Chemoselective Method for the Preparation of Amides from Amino Alcohols
作者:Susana Fernández、Emma Menéndez、Vicente Gotor
DOI:10.1055/s-1991-26553
日期:——
Oxime esters, such as acetone O-alkanoyl-, O-alkenoyl- or O-benzyloxycarbonyloximes, react with amines under extremely mild conditions to give the corresponding amides in very good yield. When amino alcohols are used a total chemoselectivity is observed.
N-Heterocyclic carbene catalyzed synthesis of oxime esters
作者:Dieter Enders、André Grossmann、David Van Craen
DOI:10.1039/c2ob26974k
日期:——
A triazolium salt derived N-heterocyclic carbene catalyzes the redox esterification reaction between α–β-unsaturated aldehydes and oximes. The resulting saturated oxime esters were obtained in very good yields for a broad range of aliphatic, aromatic and heteroaromatic substrates.
Regioselective Acylation of 2′-Deoxynucleosides Through an Enzymatic Reaction with Oxime Esters
作者:Vicente Gotor、Francisco Morís
DOI:10.1055/s-1992-26178
日期:——
3′-O-Acyl derivatives of 2′-deoxynucleosides are obtained in good yield through an enzymatic reaction using oxime esters as acyl transfer agents.
使用肟酯作为酰基转移剂,通过酶促反应可获得 2′-脱氧核苷的 3′-O-酰基衍生物,收率很高。
PHOTOSENSITIVE RESIN COMPOSITION, CURED FILM, ELEMENT PROVIDED WITH CURED FILM, AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE
申请人:Toray Industries, Inc.
公开号:EP3203320A1
公开(公告)日:2017-08-09
To provide a photosensitive resin composition which is capable of forming a pattern with high resolution and obtaining a cured film having excellent heat resistance and cracking resistance, and is also alkali developable; and a method capable of shortening the step required to remove a cured film of the composition after formation of an impurity region on a semiconductor substrate; and a method for manufacturing a semiconductor device using the same. Disclosed is a photosensitive resin composition including a polysiloxane (A), wherein the polysiloxane (A) is a polysiloxane represented by the general formula (1), and wherein (X) and (Y) are represented by the general formulas (4) to (6). 7.5≤X≤75 2.5≤Y≤40 1.5×Y≤X≤3×Y
FUSED RING DERIVATIVE HAVING MGAT-2 INHIBITORY ACTIVITY
申请人:Shionogi & Co., Ltd
公开号:EP3653625A1
公开(公告)日:2020-05-20
The present inventon provides the compound represented by the following formula (I):
wherein a moiety represented by formula:
or the like;
y is 0 or 1; R1 is hydrogen or the like; R2a and R2b are taken together with an adjacent carbon atom to form ring B; ring B is a substituted or unsubstituted non-aromatic carbocycle or the like; R3a is hydrogen or the like; R3b is hydrogen or the like; R4a is represented by formula:
L1 is a single bond or the like; L2 is -C(=O)- or the like; L3 is a single bond or the like; R7 is substituted or unsubstituted alkyl or the like; R4b is substituted or unsubstituted alkyl or the like; R4c is each independently halogen or the like.