4-溴-螺-异恶唑啉的立体选择性合成是通过对含有侧醇或羧酸官能团的各种异恶唑进行溴化而一步完成的。异恶唑溴化产生溴离子中间体,它通过相邻的氧孤对电子或分子内亲核攻击打开。单个 X 射线晶体数据提供证据表明,螺环异恶唑啉的两个连续立体中心是由亲核试剂相对于溴的反分子内攻击形成的,因为螺环氧和溴原子之间存在反立体化学关系。
A novel organocatalytic oxidation through oxidative enamine catalysis was developed with excellent compatibility for the direct syntheses of enals from simple saturated alcohols. By using this amine-catalyzed IBX-oxidation, a wide...
Synthesis and biological evaluation of fluoro-substituted spiro-isoxazolines as potential anti-viral and anti-cancer agents
作者:Prasanta Das、Sarah Boone、Dipanwita Mitra、Lindsay Turner、Ritesh Tandon、Drazen Raucher、Ashton T. Hamme
DOI:10.1039/d0ra06148d
日期:——
Electrophilic fluorine-mediated dearomative spirocyclization has been developed to synthesize a range of fluoro-substituted spiro-isoxazoline ethers and lactones. The in vitro biological assays of synthesized compounds were probed for anti-viral activity against human cytomegalovirus (HCMV) and cytotoxicity against glioblastomas (GBM6) and triple negative breast cancer (MDA MB 231). Interestingly,
The present invention relates to compounds of formula (I) which are xanthine derivatives, processes for the manufacture of said derivatives, pharmaceutical formulations containing these active compounds and the use of the compounds in therapy, for example, in the treatment of diseases where under-activation of the HM74A receptor contributes to the disease or where activation of the receptor will be beneficial
An amine and bis(phenylsulfonyl)methane co-catalyzed hydrogen–deuterium exchange (HDE) method via a Michael-retro-Michael pathway for site-selective introduction of deuterium at the α-position of enals using D2O as a deuterium source has been achieved. The mild, operationally simple protocol allows for high yielding and high level deuterium incorporation (up to 99%) for structurally diverse aromatic-derived
一种胺和双(苯磺酰基)甲烷共催化氢-氘交换 (HDE) 方法,通过Michael-retro-Michael 途径,以 D 2 O 作为氘源,在烯醛的 α 位位点选择性引入氘。已达到。温和、操作简单的协议允许高产率和高水平的氘掺入(高达 99%),用于结构多样的芳烃衍生烯和二烯。
De; Seth; Bhaduri, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1990, vol. 29, # 3, p. 231 - 234