Synthesis of α-Fluorosulfonamides by Electrophilic Fluorination
摘要:
alpha-Fluorosulfonamides were prepared by electrophilic fluorination of tertiary sulfonamides using N-fluorobenzenesulfonimide as fluorinating agent and utilizing the dimethoxybenzyl group (DMB) as a new sulfonamide protecting group. Removal of the DMB group with TFA/CH2Cl2 gave primary and secondary alpha-fluorosulfonamides.
Synthesis of α-Fluorosulfonamides by Electrophilic Fluorination
摘要:
alpha-Fluorosulfonamides were prepared by electrophilic fluorination of tertiary sulfonamides using N-fluorobenzenesulfonimide as fluorinating agent and utilizing the dimethoxybenzyl group (DMB) as a new sulfonamide protecting group. Removal of the DMB group with TFA/CH2Cl2 gave primary and secondary alpha-fluorosulfonamides.
Enantioselective Radical Construction of 5-Membered Cyclic Sulfonamides by Metalloradical C–H Amination
作者:Yang Hu、Kai Lang、Chaoqun Li、Joseph B. Gill、Isaac Kim、Hongjian Lu、Kimberly B. Fields、McKenzie Marshall、Qigan Cheng、Xin Cui、Lukasz Wojtas、X. Peter Zhang
DOI:10.1021/jacs.9b08894
日期:2019.11.13
azides can be effectively activated by the cobalt(II) complexes of D2-symmetric chiral amidoporphyrins for enantioselective radical 1,5-C-H amination to stereoselectively construct 5-membered cyclic sulfonamides. In addition to C-H bonds with varied electronic properties, the Co(II)-basedmetalloradical system features chemoselectiveamination of allylic C-H bonds and is compatible with heteroaryl groups
作者:Andrew Spaltenstein、Merrick R Almond、William J Bock、Darryl G Cleary、Eric S Furfine、Richard J Hazen、Wieslaw M Kazmierski、Francesco G Salituro、Roger D Tung、Lois L Wright
DOI:10.1016/s0960-894x(00)00163-3
日期:2000.6
A novel series of HIVproteaseinhibitors containing cyclic P1/P2 scaffolds has been synthesized and evaluated for biological activity. The trans 3,5-dibenzyl-2-oxo pyrrolidinone ring system resulted in a 50 pM enzyme inhibitor against HIVprotease in vitro when combined with an indanolamine derived P'-backbone. This compound also shows comparable activity to currently marketed drugs in the MT-4 cell-based
已经合成了一系列含有环状 P1/P2 支架的新型 HIV 蛋白酶抑制剂,并评估了其生物活性。反式 3,5-dibenzyl-2-oxo pyrrolidinone 环系统在与茚满醇胺衍生的 P'-主链结合时,可在体外产生 50 pM 的针对 HIV 蛋白酶的酶抑制剂。在基于 MT-4 细胞的抗病毒试验中,该化合物还显示出与目前市售药物相当的活性。
Highly Enantioselective Synthesis of Sultams via Pd-Catalyzed Hydrogenation
作者:Chang-Bin Yu、Da-Wei Wang、Yong-Gui Zhou
DOI:10.1021/jo900790k
日期:2009.8.7
Using pd(cf3co2)2/(S,S)-f-Binaphane as the catalyst, an efficient enantioselective synthesis of sultams was developed via asymmetric hydrogenation of the corresponding cyclic imines with high enantioselectivities. The hydrogenation products can be conveniently transformed to chiral homoallylic amines without loss of enantioselectivity.
以pd(cf 3 co 2)2 /(S,S)-f-Binaphane为催化剂,通过高对映选择性的相应环状亚胺的不对称加氢反应,开发了有效的对映异构体。氢化产物可以方便地转化为手性均烯丙基胺,而不会损失对映选择性。