Total Synthesis of (+)-(2′S,3′R)-Zoapatanol Exploiting the B-Alkyl Suzuki Reaction and the Nucleophilic Potential of the Sulfinyl Group
作者:Sadagopan Raghavan、Vaddela Sudheer Babu
DOI:10.1002/chem.201003666
日期:2011.7.18
stereoselective synthesis of the diterpenoid oxepane (+)‐zoapatanol is described. The key steps include a B‐alkyl Suzuki cross‐coupling reaction for the stereoselective synthesis of trisubstituted alkenes, creation of the two stereogenic centers on the oxepane ring by heterofunctionalization of an alkene through substrate control exploiting the nucleophilic potential of an intramolecular sulfinyl group, and transformation
[EN] HEPATITIS B ANTIVIRAL AGENTS<br/>[FR] AGENTS ANTIVIRAUX CONTRE L'HÉPATITE B
申请人:ENANTA PHARM INC
公开号:WO2017155844A1
公开(公告)日:2017-09-14
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, esters, or prodrugs thereof: X-A -Y -L-R (I) which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
Asymmetric synthesis of the C1–C6 portion of the psymberin using an Evans chiral auxiliary
作者:Ashutosh Pal、Zhenghong Peng、Paul T. Schuber、Basvoju A. Bhanu Prasad、William G. Bornmann
DOI:10.1016/j.tetlet.2013.05.153
日期:2013.10
cytotoxic agent psymberin has been synthesized. The key transformations of the synthesis are an auxiliary-controlled addition of a Sn(II)-glycolate enolate to an aldehyde to yield the anti-aldol product and transforming the primary alcohol into a terminal olefin utilizing organoseleniumchemistry.