的立体化学Ñ酰基/ Ñ磺酰5 ħ -二苯并[ b,d ]氮杂-7-(6 ħ) -酮(我,II)通过在C-4与冷冻甲基构象详细审查二苯并氮杂。由于两个轴(轴 1,轴 2)一起移动,I和II仅作为一对对映异构体 [(a 1 R , a 2 R ) 和 (a 1 S , a 2 S )] 存在,这已被证实通过IIBc 的X 射线分析. 阐明了酰胺衍生物I与E / Z-酰胺 (100:2–100:34)平衡存在,这意味着环外键(轴 3)与环内轴(轴 1,轴 2)。为了制备 5 H-二苯并[ b , d ] azepin-7(6 H )-one,重新审视了N -(1,1')-联苯-2-基-甘氨酸衍生物的分子内 Friedel-Crafts 酰化。结果表明,氨基保护基团的吸电子特性是七元环化成功的关键。
的立体化学Ñ酰基/ Ñ磺酰5 ħ -二苯并[ b,d ]氮杂-7-(6 ħ) -酮(我,II)通过在C-4与冷冻甲基构象详细审查二苯并氮杂。由于两个轴(轴 1,轴 2)一起移动,I和II仅作为一对对映异构体 [(a 1 R , a 2 R ) 和 (a 1 S , a 2 S )] 存在,这已被证实通过IIBc 的X 射线分析. 阐明了酰胺衍生物I与E / Z-酰胺 (100:2–100:34)平衡存在,这意味着环外键(轴 3)与环内轴(轴 1,轴 2)。为了制备 5 H-二苯并[ b , d ] azepin-7(6 H )-one,重新审视了N -(1,1')-联苯-2-基-甘氨酸衍生物的分子内 Friedel-Crafts 酰化。结果表明,氨基保护基团的吸电子特性是七元环化成功的关键。
Use of small molecules to enhance MAFA expression in pancreatic endocrine cells
申请人:Janssen Biotech, Inc.
公开号:US10006006B2
公开(公告)日:2018-06-26
The present invention provides methods, cell cultures and differentiation media to promote differentiation of pluripotent stem cells to pancreatic endocrine cells of a mature phenotype. The resulting pancreatic endocrine cells express single hormonal insulin, PDX1, NKX6.1, and MAFA. In one or more differentiation stages, culturing may be carried out in a culture vessel at the air-liquid interface.
Catalytic flash vacuum pyrolysis (CFVP): A new way to afford 7H-dibenzo[b,d]azepin-7-one
作者:Elizabeth L. Moyano、Griselda A. Eimer、Paola L. Lucero、Corina M. Chanquia、Eduardo R. Herrero、Gloria I. Yranzo
DOI:10.1016/j.apcata.2009.11.003
日期:2010.1.31
Catalytic flash vacuum pyrolysis (cfvp) of 2-(1H-1,2,3-benzotriazol-1-yl)-phenylethanone (1) was performed over different mesoporous solids of the MCM-41 type: pure Si-MCM-41, Al-MCM-41 and Ti-MCM-41 with Si/metal ratio equal to 20 and 120. While in the absence of the catalyst (conventional fvp) the thermal reaction afforded 7H-dibenzo[b,d]azepin-7-one (5) as the main product between 400 and 500 degrees C, in the cfvp systems different products were obtained between 350 and 450 degrees C depending on the type of catalysts. Al-MCM-41 showed the best catalytic performance with azepinone selectivity of 87% at 450 degrees C. The mechanisms of formation of these different products as well as the effect of different solids are discussed. Mesoporous materials used in this study have been prepared by direct hydrothermal synthesis. Structural regularity was determined by XRD and highly ordered structures were obtained. (C) 2009 Elsevier B.V. All rights reserved.
USE OF SMALL MOLECULES TO ENHANCE MAFA EXPRESSION IN PANCREATIC ENDOCRINE CELLS
申请人:Janssen Biotech, Inc.
公开号:EP3143127A1
公开(公告)日:2017-03-22
Use of Small Molecules to Enhance Mafa Expression in Pancreatic Endocrine Cells
申请人:Janssen Biotech, Inc.
公开号:US20150329828A1
公开(公告)日:2015-11-19
The present invention provides methods, cell cultures and differentiation media to promote differentiation of pluripotent stem cells to pancreatic endocrine cells of a mature phenotype. The resulting pancreatic endocrine cells express single hormonal insulin, PDX1, NKX6.1, and MAFA. In one or more differentiation stages, culturing may be carried out in a culture vessel at the air-liquid interface.
[EN] USE OF SMALL MOLECULES TO ENHANCE MAFA EXPRESSION IN PANCREATIC ENDOCRINE CELLS<br/>[FR] UTILISATION DE PETITES MOLÉCULES POUR AMÉLIORER L'EXPRESSION DU GÈNE MAFA DANS DES CELLULES ENDOCRINES PANCRÉATIQUES
申请人:JANSSEN BIOTECH INC
公开号:WO2015175307A1
公开(公告)日:2015-11-19
The present invention provides methods, cell cultures and differentiation media to promote differentiation of pluripotent stem cells to pancreatic endocrine cells of a mature phenotype. The resulting pancreatic endocrine cells express single hormonal insulin, PDX1, NKX6.1, and MAFA. In one or more differentiation stages, culturing may be carried out in a culture vessel at the air-liquid interface.