Stereoselective Synthesis of Medium-Sized Cyclic Ethers by Sequential Ring-Closing Metathesis and Tsuji–Trost Allylation
作者:James Skardon-Duncan、Michael Sparenberg、Alexandre Bayle、Sam Alexander、J. Stephen Clark
DOI:10.1021/acs.orglett.8b01082
日期:2018.5.4
Fully functionalized medium-sized cyclic ethers, of the type found in fused polyether natural products, have been prepared by sequential ring-closing diene metathesis, conversion of the resulting cyclic enone into an allylic enol carbonate, and Tsuji–Trost allylation using a chiral palladium complex. Very high levels of diastereocontrol, favoring the diastereomer in which there is a cis relationship
Proteasomeactivity affects cell cycle progression as well as the immune response, and it is largely recognized as an attractive pharmacological target for potential therapies against several diseases. Herein we present the synthesis of a series of pseudodi/tripeptides bearing at the C-terminal position different α-ketoamide moieties as pharmacophoric units for the interaction with the catalytic threonine
Sesquiterpene Cyclizations inside the Hexameric Resorcinarene Capsule: Total Synthesis of δ‐Selinene and Mechanistic Studies
作者:Qi Zhang、Konrad Tiefenbacher
DOI:10.1002/anie.201906753
日期:2019.9.2
capsule was utilized as an artificial cyclase to catalyze the cyclization of sesquiterpenes. With the cyclization reaction as the key step, the first total synthesis of the sesquiterpene natural product δ-selinene was achieved. This represents the first total synthesis of a sesquiterpene natural product that is based on the cyclization of a linear terpene precursor inside a supramolecular catalyst
Compositions for Treatment of Cystic Fibrosis and Other Chronic Diseases
申请人:Vertex Pharmaceuticals Incorporated
公开号:US20150231142A1
公开(公告)日:2015-08-20
The present invention relates to pharmaceutical compositions comprising an inhibitor of epithelial sodium channel activity in combination with at least one ABC Transporter modulator compound of Formula A, Formula B, Formula C, or Formula D. The invention also relates to pharmaceutical formulations thereof, and to methods of using such compositions in the treatment of CFTR mediated diseases, particularly cystic fibrosis using the pharmaceutical combination compositions.
Synthesis of 4-Substituted Chlorophthalazines, Dihydrobenzoazepinediones, 2-Pyrazolylbenzoic Acid, and 2-Pyrazolylbenzohydrazide via 3-Substituted 3-Hydroxyisoindolin-1-ones
作者:Hanh Nho Nguyen、Victor J. Cee、Holly L. Deak、Bingfan Du、Kathleen Panter Faber、Hakan Gunaydin、Brian L. Hodous、Steven L. Hollis、Paul H. Krolikowski、Philip R. Olivieri、Vinod F. Patel、Karina Romero、Laurie B. Schenkel、Stephanie D. Geuns-Meyer
DOI:10.1021/jo3000628
日期:2012.4.20
hydrazine, followed by chlorination with POCl3. We have also discovered twonovel transformations of 3-vinyl- and 3-alkynyl-3-hydroxyisoindolinones. Addition of vinyl organometallic reagents to N,N-dimethylaminophthalimide (8a) provided dihydrobenzoazepinediones 15a–15c via the proposed ringexpansion of 3-vinyl-3-hydroxyisoindolinone intermediates. 3-Alkynyl-3-hydroxyisoindolinones react with hydrazine and