Synthesis of 1-aroyl(1-arylsulfonyl)-4-bis(trifluoromethyl)alkyl semicarbazides as potential physiologically active compounds
作者:Elena L. Luzina、Anatoliy V. Popov
DOI:10.1016/j.jfluchem.2013.01.033
日期:2013.4
1,1-Bis(trifluoromethyl)alkyl isocyanates obtained from perfluoroisobutene (PFIB) react with aroyl(arylsulfonyl)hydrazines. Twenty eight prospective biologically active polyfluorinated 1,4-substituted semicarbazides were synthesized. The structure of each new product was confirmed by analytical and spectroscopic methods. The Lipinski's and Gelovani's parameters were then calculated. Two adjustments
(TBHP)‐mediated annulationcascade between yne‐allenones and sulfonyl hydrazides has been established, in which a wide set of dihydrobenzo[f]phthalazines were synthesized through one‐pot, two‐step strategy under metal‐free conditions. The synthetic utility of these transformations leads to subsequent C−C and C−N bond‐forming reactions to effectively build up functional aza‐heterocycle with potential
在炔炔酮和磺酰肼之间建立了碘(I 2)/叔丁基过氧化氢(TBHP)介导的级联反应,其中通过一锅,两步合成了各种二氢苯并[ f ]邻苯二甲酰肼。无金属条件下的策略。这些转化的合成效用导致后续的C-C和C-N键形成反应,以有效地建立具有潜在意义的功能氮杂杂环。
Vitamin d derivatives
申请人:——
公开号:US20040019023A1
公开(公告)日:2004-01-29
The object of the present invention is to provide vitamin D derivatives that have excellent physiological activities as medicines, particularly as therapeutic agents for skin diseases such as psoriasis, and that have a reduced hypercalcemic effect.
The present invention provides a vitamin D derivative of Formula (1):
1
wherein
X represents an oxygen atom or a sulfur atom;
m represents a number of 1 to 3;
R
1
and R
2
each represent a hydrogen atom or an alkyl group;
R
4
and R
5
each represent a hydrogen atom or a hydroxyl group, etc.;
R
3
represents —YR
8
, etc.;
R
6
represents a hydrogen atom, etc.; and
R
7
represents a hydrogen atom, etc.
本发明的目的是提供作为药物的维生素D衍生物,特别是作为治疗银屑病等皮肤疾病的治疗剂,并且具有减少高钙血症作用的维生素D衍生物。
本发明提供了化学式(1)的维生素D衍生物:
1
其中
X代表氧原子或硫原子;
m代表1至3的数字;
R
1
和R
2
分别代表氢原子或烷基;
R
4
和R
5
分别代表氢原子或羟基等;
R
3
代表—YR
8
等;
R
6
代表氢原子等;以及
R
7
代表氢原子等。
Copper-Catalyzed Oxidative Cyclization of Alkynes with Sulfonylhydrazides Leading to 2-Sulfonated 9<i>H</i>-pyrrolo[1,2-<i>a</i>]indol-9-ones
A copper-catalyzed oxidative cyclization procedure has been developed for the production of 2-sulfonated 9H-pyrrolo[1,2-a]indol-9-ones via the direct sulfonylation of N-propargyl-substituted indoles with sulfonylhydrazides and tert-butyl hydroperoxide (TBHP). This novel protocol, which tolerates a broad range of functional groups, offers a simple, efficient, and atom-economical route to a series of
已经开发了一种铜催化的氧化环化程序,用于通过磺酰肼和叔丁基直接将N-炔丙基取代的吲哚进行磺酰化来生产2-磺化的9 H-吡咯并[1,2 - a ]吲哚-9-酮。氢过氧化物(TBHP)。这种新颖的方案可耐受多种官能团,在温和的条件下,以高收率提供了一系列简单,高效且原子经济的途径来合成一系列芴酮。
Copper‐Catalyzed Radical Sulfonylation of
<i>N</i>
‐Propargylindoles with Concomitant 1,2‐Aryl Migration
N‐propargyl‐substituted indoles with concomitant 1,2‐aryl migration was described. The protocol, which has good functional‐group tolerance, provides practical, versatile and atom‐economical method of accessing a new class of fascinating 2‐sulfonated pyrrolo[1,2‐α]indole derivatives in moderate to good yields through the formation of the new C−S, C−C and C=O bonds in a one‐step.