A facile synthetic route to diazepinone derivatives via ring closing metathesis and its application for human cytidine deaminase inhibitors
作者:Minkyoung Kim、Kondaji Gajulapati、Chorong Kim、Hwa Young Jung、Jail Goo、Kyeong Lee、Navneet Kaur、Hyo Jin Kang、Sang J. Chung、Yongseok Choi
DOI:10.1039/c2cc35484e
日期:——
A variety of diazepinone derivatives were prepared from α-amino acids and amino alcohols by a new synthetic methodology based on ring closing metathesis as a key step. The diazepinones were coupled with ribose derivatives to afford novel diazepinone nucleosides. Among them, (4R)-1-ribosyl-4-methyl-3,4-dihydro-1H-1,3-diazepin-2(7H)-one (3) showed a potent inhibitory effect (Ki = 145.97 ± 4.87 nM) against human cytidine deaminase.
Synthesis of 3-Ethyl-4-methyl-1,5-dihydro-2H-pyrrol-2-one by Novel Palladium(II)-Catalyzed Cyclization and Ring-Closing Metathesis
作者:Subhash Chavan、Ashok Pathak、Kailash Pawar
DOI:10.1055/s-0034-1379985
日期:——
Abstract Synthesis of 3-ethyl-4-methyl-1,5-dihydro-2H-pyrrol-2-one is described starting from commercially available allylamine and 4-methoxybenzylamine employing palladium-catalyzed cyclization or ring-closingmetathesis as the keysteps. Synthesis of 3-ethyl-4-methyl-1,5-dihydro-2H-pyrrol-2-one is described starting from commercially available allylamine and 4-methoxybenzylamine employing palladium-catalyzed
Enantioselective Palladium-Catalyzed Arylborylation/Cyclization of Alkenes to Access Boryl-Functionalized Heterocyclic Compounds Containing Quaternary Stereogenic Centers
作者:Xingfeng Bai、Wenrui Zheng、Shaozhong Ge、Yixin Lu
DOI:10.1021/acs.orglett.2c01082
日期:2022.4.29
Asymmetric palladium-catalyzed arylboration/cyclization of both nonactivated and activated alkenes with B2pin2 was developed. A wide range of N-allyl-o-iodobenzamides and o-iodoacryanilides reacted with B2pin2 to afford borylated 3,4-dihydroisoquinolinones and oxindoles, respectively, in high yields with high enantioselectivities. The synthetic utility of this enantioselective protocol was highlighted
开发了非活化和活化烯烃与 B 2 pin 2的不对称钯催化芳基硼化/环化。范围广泛的N-烯丙基-邻碘苯甲酰胺和邻碘丙烯酰苯胺与 B 2 pin 2反应,分别以高产率和高对映选择性得到硼化 3,4-二氢异喹啉酮和羟吲哚。通过合成各种手性 3,4-二氢异喹啉酮和含有季立体碳中心的羟吲哚衍生物,包括对映体富集的罗氏抗癌剂 ( S )-RO4999200,突出了该对映选择性方案的合成效用。
Generation of glycinyl radicals via a 1,5-hydrogen atom transfer reaction. Applications to γ-lactam formation
作者:J. Rancourt、V. Gorys、E. Jolicoeur
DOI:10.1016/s0040-4039(98)01042-9
日期:1998.7
Glycinyl radicals can be generated using a simple protecting/radical translocating group and used in the preferential formation of trans-3,4-disubstituted γ-lactams via a radical cyclisation reaction.
Rapid Access to Multisubstituted Acrylamides from Cyclic Ketones via Palladium/Norbornene Cooperative Catalysis
作者:Zhao Wu、Guangbin Dong
DOI:10.1002/anie.202201239
日期:2022.4.19
A palladium/norbornene-catalyzed vicinal difunctionalization of enol triflates has been developed for rapid, modular and regioselective synthesis of multisubstituted acrylamides from simple ketones. The reaction exhibits broad functional group tolerance, and the use of bulky secondary amide-derived norbornenes appears to be a key parameter to maintain high efficiency and selectivity.