[EN] INHIBITORS OF ERYTHROCYTE BAND 3 TYROSINE PHOSPHORYLATION AND USES THEREOF [FR] INHIBITEURS DE LA PHOSPHORYLATION SUR TYROSINE DE LA BANDE 3 ÉRYTHROCYTAIRE ET LEURS UTILISATIONS
Synthesis of vulpinic and pulvinic acids from tetronic acid
作者:Yann Bourdreux、Ewen Bodio、Catherine Willis、Célia Billaud、Thierry Le Gall、Charles Mioskowski
DOI:10.1016/j.tet.2008.06.058
日期:2008.9
A common precursor, tetronic acid, was used in the synthesis of several vulpinic acids and pulvinicacids, which are pigments found in several lichens and mushrooms. The key features of this method are a two-step alkylidenation of benzyl tetronate and a Suzuki–Miyaura cross-coupling. The synthesis of several natural products, vulpinic acid, pinastricacid, xerocomic acid is described.
A convergent total synthesis of lamellarins S and Z is described. The synthesis features a halogendance of an easily accessible α,β-dibromopyrrole promoted by an ester moiety. The resultant β,β′-dibromopyrrole undergoes a ligand-controlled Suzuki–Miyaura coupling to provide a range of diarylated pyrrole derivatives. The established synthetic method was also applicable to the synthesis of ningalin
A bottom-up synthesis of lamellarinsG, J, L, and Z was achieved via one-pot halogen dance/Negishi coupling of a lithiated dibromopyrrole derivative. The easily accessible dibromopyrrole bearing an ester moiety underwent halogen dance smoothly at −78 °C within 10 min. The resultant α-pyrrolyllithium was transmetalated to the corresponding organozinc species, which was then coupled with an aryl iodide
层状蛋白 G、J、L 和 Z 的自下而上合成是通过锂化二溴吡咯衍生物的一锅卤素舞蹈/Negishi 偶联实现的。易于获得的带有酯部分的二溴吡咯在-78°C 下10 分钟内顺利进行了卤素舞蹈。得到的 α-吡咯锂被金属转移到相应的有机锌物质上,然后在催化钯的存在下与芳基碘化物偶联以提供完全取代的吡咯。随后进行卤素 - 锂交换以仅在靠近酯部分的 β 位置掺入硼酸酯基团。这种合成中间体允许逐步二芳基化,用于层状蛋白 G、J、L 和 Z 的全合成。
[EN] NOVEL QUINIZARINE DERIVATIVE AND PREPARATION METHOD THEREFOR<br/>[FR] NOUVEAU DÉRIVÉ DE QUINIZARINE ET SON PROCÉDÉ DE PRÉPARATION<br/>[KO] 신규 퀴니자린 유도체 및 이의 제조 방법
申请人:[en]BENOBIO CO., LTD.;[ko]주식회사 베노바이오
公开号:WO2023096111A1
公开(公告)日:2023-06-01
본원은 신규 퀴니자린 유도체에 관한 것으로서, 상기 퀴니자린 유도체는 BET(Bromodomain Extra-Terminal) 단백질 억제능을 가지며, 이로 인해 BET단백질 관련 질환인 암, 자가면역 또는 염증성 질환, 대사 질환, 및 바이러스성 질환 등의 예방 또는 치료용 약학적 조성물로서 이용될 수 있다. 특히, 본원에 따른 신규 퀴니자린 유도체는 지방생성억제능 및 지방합성인자 발현억제능을 가지므로 비알콜성 지방간의 치료용 약학적 조성물로서 이용될 수 있다.