Phosphine‐Catalyzed Intermolecular Annulations of Fluorinated
<i>ortho</i>
‐Aminophenones with Alkynones
<i>–</i>
The Switchable [4+2] or [4+2]/[3+2] Cycloaddition
作者:Yanshun Zhang、Yaoliang Sun、Yin Wei、Min Shi
DOI:10.1002/adsc.201900082
日期:2019.4.23
A phosphine‐catalyzedintermolecularannulation reaction of functionalized ortho‐aminoacetophenones with alkynones has been disclosed in this paper. A variety of 2‐alkynylquinolines and benzo‐fused indolizine were selectively afforded in moderate to good yields at different reaction temperatures and with different phosphine catalysts via the in situ generated zwitterionic intermediate derived from
Synthesis of fluoromethyl-containing analogs of antitumor alkaloid luotonin A
作者:A. S. Golubev、V. O. Bogomolov、A. F. Shidlovskii、L. G. Dezhenkova、A. S. Peregudov、A. A. Shtil、N. D. Chkanikov
DOI:10.1007/s11172-010-0064-9
日期:2010.1
3-bromomethyl-2-chloro-4-trifluo-romethylquinoline with 4(3H)-quinazolinone with subsequent intramolecular Heck cyclization leads to 7-trifluoromethylluotonin, an analog of the antitumoralkaloid luotonin A. 7-Trifluo-romethylluotonin retains the antitumor activity including apoptosis of cultured tumor cells and inhibiting DNA-topoisomerase I.
已开发出一种合成迄今为止未知的 3-溴甲基-2-氯-4-氟甲基喹啉的简便方法。3-溴甲基-2-氯-4-三氟-甲基喹啉与 4(3H)-喹唑啉酮的偶联以及随后的分子内 Heck 环化导致 7-三氟甲基罗红素,一种抗肿瘤生物碱 luotonin A 的类似物。 7-Trifluo-romethylluotonin 保留了抗肿瘤活性活性包括培养的肿瘤细胞的凋亡和抑制 DNA 拓扑异构酶 I。
Synthesis and evaluation of analogs of Efavirenz (SUSTIVATM) as HIV-1 reverse transcriptase inhibitors
作者:Mona Patel、Soo S. Ko、Robert J. McHugh、Jay A. Markwalder、Anurag S. Srivastava、Beverly C. Cordova、Ronald M. Klabe、Susan Erickson-Viitanen、George L. Trainor、Steven.P. Seitz
DOI:10.1016/s0960-894x(99)00486-2
日期:1999.10
Efavirenz (SUSTIVA(TM)) is a potent non-nucleoside reverse transcriptase inhibitor. Due to the observation of breakthrough mutations of the reverse transcriptase enzyme during Efavirenz therapy, we sought to develop an optimized second generation series. To that end, SAR of the substituents on the aromatic ring was undertaken and the results are summarized here. The 5,6-difluoro (4f) and the 6-methoxy (4m) substituted benzoxazinones were determined to be equipotent, and as a result such substitution patterns will be incorporated in second generation scaffolds. (C) 1999 DuPont Pharmaceuticals. Published by Elsevier Science Ltd. All rights reserved.