127915-15-5Relevant articles and documents
-Alkoxystannyl ethers in organic synthesis: Synthesis of functionalised γ-butyrolactones
Gilbert, Philip,Lewis, Mark L.,Quayle, Peter,Zhao, Yuekun,Mills, Keith
, p. 9115 - 9118 (1996)
Ozonolysis of a variety of (tetraydrofuran-2-yl)tri-n-butylstannanes affords the corresponding γ-butyrolactones in good to excellent yields. This reaction is tolerant to a range of other functional groups and provides access to substituted γ-butyrolactone
Enantioselective phase-transfer catalytic α-benzylation and α-allylation of α-tert-butoxycarbonyllactones
Ha, Min Woo,Lee, Heejin,Yi, Hye Yeong,Park, Yohan,Kim, Sori,Hong, Suckchang,Lee, Myungmo,Kim, Mi-Hyun,Kim, Taek-Soo,Park, Hyeung-Geun
, p. 637 - 642 (2013)
A new enantioselective α-benzylation and α-allylation of α-tert-butoxycarbonyllactones was devloped. α-Benzylation and α-allylation of α-tert-butoxycarbonylbutyrolactone and α-tert-butoxycarbonylvalerolactone under phase-transfer catalytic conditions (50% cesium hydroxide, toluene, -60 °C) in the presence of (S,S)-3,4,5-trifluorophenyl-NAS bromide (1 mol%) afforded the corresponding α-substituted α-tert-butoxycarbonyllactones in very high chemical yields (up to 99%) and optical yields (up to 99% ee). The synthetic potential of this method has been successfully demonstrated by the asymmetric synthesis of unnatural α-quaternary homoserines, 3-alkyl-3-carboxypyrrolidine and 3-alkyl-3-carboxypiperidine. Copyright
A Unified Strategy for the Synthesis of Difluoromethyl- And Vinylfluoride-Containing Scaffolds
Duchemin, Nicolas,Buccafusca, Roberto,Daumas, Marc,Ferey, Vincent,Arseniyadis, Stellios
supporting information, p. 8205 - 8210 (2019/10/16)
Here, we report a general method for the synthesis of quaternary and tertiary difluoromethylated compounds and their vinylfluoride analogues. The strategy, which relies on a two-step sequence featuring a C-selective electrophilic difluoromethylation and either a palladium-catalyzed decarboxylative protonation or a Krapcho decarboxylation, is practical, scalable, and high yielding. Considering the generality of the method and the attractive properties offered by the difluoromethyl group, this approach provides a valuable tool for late-stage functionalization and drug development.
Lead optimization of a dihydropyrrolopyrimidine inhibitor against phosphoinositide 3-kinase (PI3K) to improve the phenol glucuronic acid conjugation
Kawada, Hatsuo,Ebiike, Hirosato,Tsukazaki, Masao,Nakamura, Mitsuaki,Morikami, Kenji,Yoshinari, Kiyoshi,Yoshida, Miyuki,Ogawa, Kotaro,Shimma, Nobuo,Tsukuda, Takuo,Ohwada, Jun
supporting information, p. 673 - 678 (2013/02/23)
Our lead compound for a phosphoinositide 3-kinase (PI3K) inhibitor (1) was metabolically unstable because of rapid glucuronidation of the phenol moiety. Based on structure-activity relationship (SAR) information and a FlexSIS docking simulation score, aminopyrimidine was identified as a bioisostere of phenol. An X-ray structure study revealed a hydrogen bonding pattern of aminopyrimidine derivatives. Finally, aminopyrimidine derivatives 33 showed strong tumor growth inhibition against a KPL-4 breast cancer xenograft model in vivo.