通过由吡唑啉酮衍生的递归阴离子介导的碱介导的,一锅,无金属,正交捆扎(束缚),由多种邻卤代芳基炔酮和β-溴烯基炔酮组装而成了一类新型的螺旋形吡唑啉酮支架。这些方便,可用于制备的转化过程可通过串联的迈克尔加成-分子内S N Ar反应或串联的迈克尔加成-分子内Ad N E过程进行,以从易于获得的前体中提供多种药效学,多样的,螺旋形的吡唑啉酮。
Rapid access to unsymmetrical tolanes and alkynones by sequentially palladium-catalyzed one-pot processes
作者:Alissa C. Götzinger、Thomas. J. J. Müller
DOI:10.1039/c6ob00483k
日期:——
can be rapidly generated in a one-pot fashion via sequential palladium catalysis. Terminal alkynes, formed in situ by protecting-group free palladium-catalyzed coupling of aryl iodides with ethynyl magnesium bromide, are subsequently transformed by Sonogashira coupling with aryl halides or aroyl chlorides to furnish unsymmetrically substituted alkynes in good to excellent yields.
Synthesis of Aza-Eight-Membered Ring-Fused Indolines Initiated by Zn-Catalyzed C2 Alkylation of Indoles and Subsequent Base-Promoted Ring Expansion
作者:Yang Yuan、Ye Wang、Yuanyang Mu、Murong Xu、Siyi Fu、Lingkai Kong、Yanzhong Li
DOI:10.1021/acs.orglett.0c02307
日期:2020.8.21
A novel and efficient synthesis of aza-eight-membered ring-fused indolines has been developed. This process is realized by zinc-catalyzed C2 alkylation of indoles and subsequent base-promoted ring expansion of the newly formed six-memberedring with alkynes. Easily accessible starting materials, good functional group tolerance, and high atom economy make this procedure attractive.
Tandem aza-Michael addition–vinylogous aldol condensation: synthesis of <i>N</i>-bridged pyridine fused quinolones
作者:Lalitha Gummidi、Altaf Muddassar、Gangavaram V. M. Sharma、V. Murugesh、Surisetti Suresh
DOI:10.1039/d1ob02087k
日期:——
addition–vinylogous aldol condensation strategy for the synthesis of N-bridged pyridinefused quinolone derivatives from quinolones and ynones. The presented tandem transformation features the construction of C–N and CC bonds in a single operation, under transition metal-free conditions. The wide substrate scope and gram scale synthesis of pyridinefused quinolone derivatives expand the synthetic value of
在此,我们提出了一种串联氮杂-迈克尔加成-乙烯醇醛缩合策略,用于从喹诺酮类和炔诺酮类合成N-桥联吡啶稠合喹诺酮衍生物。所提出的串联转变的特点是在无过渡金属条件下,在一次操作中构建 C-N 和 C C 键。吡啶融合喹诺酮衍生物的广泛底物范围和克级合成扩大了所提出协议的合成价值。
This invention relates to 1-phenyl-3-phenyl-2-propyne-1-ones, and pharmaceutical compositions containing these compounds as active ingredients useful as calcium uptake inhibitors in leukocytes and thrombocytes, and the process for their preparation.