酰基载体蛋白是脂肪酸和聚酮化合物生物合成的关键成分。它们的主要功能是通过共价结合的磷酸泛酰巯基乙胺臂在活性位点之间穿梭中间体。能够酰化该辅基的小分子将提供一种将新功能引入载体蛋白结构域的简单且可逆的方法。准备一系列 N 活化的 β-内酰胺来检查磷酸泛酰巯基乙胺-硫醇的位点特异性酰化。一般来说,发现 β-内酰胺比我们之前研究的 β-内酯更具反应性。证明了对完全取代 apo 形式的酰基载体蛋白的选择性,表明只有磷酸泛酰巯基乙胺硫醇被修饰。N-炔丙基氧羰基的结合提供了用于与荧光团和亲和标记结合的炔柄。通过与传统探针的比较,检查了这些基团在聚酮化合物生物合成关键步骤的机械询问中的效用。总而言之,我们希望本研究中描述的探针可以作为机械审讯的有价值和通用的工具。
TMSOTf-mediated approach to 1,3-oxazin-2-one skeleton through one-pot successive reduction-[4 + 2] cyclization process of imides with ynamides
作者:Chen-Chen Zhang、Zhi-Peng Huo、Mei-Lin Tang、Yong-Xi Liang、Xun Sun
DOI:10.1016/j.tetlet.2021.152946
日期:2021.3
A one-pot approach to access functionalized 1,3-oxazin-2-one skeleton has been developed through successive reduction and subsequent [4 + 2] cyclization process of N-Boc lactams with ynamides by TMSOTf. As a result, a number of five to seven membered ring fused bicyclic [1,2-c][1], [3]oxazin-1-ones 12a-m and tricyclic derivatives 13a-f were obtained in moderate to excellent yields with excellent regioselectivities
This invention recites isoxazoline substituted azetidine derivatives of Formula (1)
stereoisomers thereof, veterinarily acceptable salts thereof, compositions thereof, and their use as a parasiticide in mammals and birds. R
1a
, R
1b
, R
1c
, R
2
, R
3
, R
4
, R
6
, and n are as described herein.
[EN] OXINDOLE DERIVATIVES CARRYING A PIPERIDYL-SUBSTITUTED AZETIDINYL SUBSTITUENT AND USE THEREOF FOR TREATING VASOPRESSINE-RELATED DISEASES<br/>[FR] DÉRIVÉS D'OXINDOLE À SUBSTITUANT AZÉTIDINYL SUBSTITUÉ PAR PIPÉRIDYL, ET LEUR UTILISATION POUR LE TRAITEMENT DE MALADIES LIÉES À LA VASOPRESSINE
申请人:ABBVIE DEUTSCHLAND
公开号:WO2015091931A1
公开(公告)日:2015-06-25
The present invention relates to novel substituted oxindole derivatives of formula (I) wherein the variables are as defined in the claims and description; to pharmaceutical compositions comprising them, and to their use for treatment of vasopressin-related disorders.
[EN] MELANOCORTIN RECEPTOR MODULATORS, PROCESS FOR PREPARING THEM AND USE THEREOF IN HUMAN MEDICINE AND COSMETICS<br/>[FR] MODULATEURS DU RÉCEPTEUR DE MÉLANOCORTINE, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION EN MÉDECINE HUMAINE ET EN COSMÉTIQUE
申请人:GALDERMA RES & DEV
公开号:WO2010052255A1
公开(公告)日:2010-05-14
The present invention relates to novel melanocortin receptor modulators corresponding to the general formula (I) to compositions containing them, to the process for preparing them and to their use in pharmaceutical or cosmetic compositions.
Hydrozirconation of four-, five-, six- and seven-membered N-alkoxycarbonyl lactams to lactamols
作者:Anna Piperno、Caterina Carnovale、Salvatore V. Giofrè、Daniela Iannazzo
DOI:10.1016/j.tetlet.2011.10.006
日期:2011.12
practical, and efficient reduction of four-, five-, six- and, seven-membered N-alkoxycarbonyl lactams to the aldehyde oxidation state is reported. The reduction methodology involves the hydrozirconation reaction by Cp2Zr(H)Cl under mild conditions and proceeds with very short reaction times and in excellent to good yields. The hydrozirconation of N-alkoxycarbonyl lactams with the Schwartz reagent demonstrated