Oxathiolene oxide synthesis via chelation-controlled addition of organometallic reagents to alkynols followed by addition of sulfur electrophiles and evaluation of oxathiolene oxides as anticarcinogenic enzyme inducers
作者:Marion A. Franks、Edward A. Schrader、E. Christine Pietsch、Daniel R. Pennella、Suzy V. Torti、Mark E. Welker
DOI:10.1016/j.bmc.2004.12.037
日期:2005.3
A number of alkynols have been prepared by Sonogashira coupling of propargylalcohol to aromatic halides. Chelation-controlled addition of organometallic nucleophiles to these alkynols was then effected followed by the addition of the sulfur electrophiles, sulfur dioxide or thionylchloride. This methodology was used to prepare a number of oxathiolene oxides, which have been screened as NQO1 (quinone
Design and synthesis of novel xanthine derivatives as potent and selective A 2B adenosine receptor antagonists for the treatment of chronic inflammatory airway diseases
作者:Sujay Basu、Dinesh A. Barawkar、Vidya Ramdas、Meena Patel、Yogesh Waman、Anil Panmand、Santosh Kumar、Sachin Thorat、Minakshi Naykodi、Arnab Goswami、B. Srinivasa Reddy、Vandna Prasad、Sandhya Chaturvedi、Azfar Quraishi、Suraj Menon、Shalini Paliwal、Abhay Kulkarni、Vikas Karande、Indraneel Ghosh、Syed Mustafa、Siddhartha De、Vaibhav Jain、Ena Ray Banerjee、Sreekanth R. Rouduri、Venkata P. Palle、Anita Chugh、Kasim A. Mookhtiar
DOI:10.1016/j.ejmech.2017.04.014
日期:2017.7
Adenosine induces bronchial hyperresponsiveness and inflammation in asthmatics through activation of A2B adenosinereceptor (A2BAdoR). Selective antagonists have been shown to attenuate airway reactivity and improve inflammatory conditions in pre-clinical studies. Hence, the identification of novel, potent and selective A2BAdoR antagonist may be beneficial for the potential treatment of asthma and
HFIP-Empowered One-Pot Synthesis of C4-Aryl-Substituted Tetrahydroquinolines with Propargylic Chlorides and Anilines
作者:Seung Hoon Lee、Hyung Min Chi
DOI:10.1021/acs.orglett.2c04299
日期:2023.2.24
one-pot synthesis of C4-aryl-substituted tetrahydroquinolines from simple anilines and readily accessible propargylic chlorides has been developed. Activation of the C–Cl bond by 1,1,1,3,3,3-hexafluoroisopropanol turned out to be the key interaction, which allowed C–N bond formation under an acidic medium. Propargylated aniline is formed as an intermediate via propargylation, and subsequential cyclization
已经开发出无过渡金属、实用的 C4-芳基取代的四氢喹啉的一锅法合成,从简单的苯胺和容易获得的炔丙基氯。1,1,1,3,3,3-六氟异丙醇对 C-Cl 键的激活被证明是关键的相互作用,它允许在酸性介质下形成 C-N 键。炔丙基化苯胺作为中间体通过炔丙基化形成,随后环化和还原得到 4-芳基化四氢喹啉。为了证明合成效用,黄喹诺酮 F 和 I 的全合成已经完成。
Microwave-assisted Claisen rearrangement of naphthyl 2-propynyl ethers: synthesis of naphthofurans
作者:V.S. Prasada Rao Lingam、Dnyaneshwar H. Dahale、Kagga Mukkanti、Balasubramanian Gopalan、Abraham Thomas
DOI:10.1016/j.tetlet.2012.08.053
日期:2012.10
An efficient two-step approach for the synthesis of naphtho[1,2-b]furans and naphtho[2,1-b]furans has been developed. Various functionalized propargyl alcohols were etherified with alpha- or beta-naphthol under Mitsunobu reaction conditions to give naphthyl 2-propynyl ethers, which underwent a facile microwave-assisted Claisen rearrangement and concomitant anionic cyclization to yield naphthofuran derivatives under basic reaction conditions. (c) 2012 Elsevier Ltd. All rights reserved.