C(21)−C(40) of Tetrafibricin via Metal Catalysis: Beyond Stoichiometric Chiral Reagents, Auxiliaries, and Premetalated Nucleophiles
摘要:
The C(21)-C(40) fragment of fibrinogen receptor inhibitor tetrafibricin was prepared in 12 steps from propane diol (longest linear sequence). In this approach, 6 C-C bonds are formed via asymmetric iridium catalyzed transfer hydrogenative carbonyl allylation and 2 C=C bonds are formed via Grubbs olefin cross-metathesis.
C(21)−C(40) of Tetrafibricin via Metal Catalysis: Beyond Stoichiometric Chiral Reagents, Auxiliaries, and Premetalated Nucleophiles
摘要:
The C(21)-C(40) fragment of fibrinogen receptor inhibitor tetrafibricin was prepared in 12 steps from propane diol (longest linear sequence). In this approach, 6 C-C bonds are formed via asymmetric iridium catalyzed transfer hydrogenative carbonyl allylation and 2 C=C bonds are formed via Grubbs olefin cross-metathesis.
Sulfanylation of 1,3-dithiane anions by 5-(alkylsulfanyl)-1-phenyltetrazoles
作者:Venugopal Gudipati、Reena Bajpai、Dennis P. Curran
DOI:10.1135/cccc2008195
日期:——
An unusual reaction between 1,3-dithiane anions and by 5-(alkylsulfanyl)-1-phenyltetrazoles has been discovered in which the dithiane anion formally displaces the 1-phenyltetrazole ring from sulfur to provide a sulfanylated dithiane.
C(21)−C(40) of Tetrafibricin <i>via</i> Metal Catalysis: Beyond Stoichiometric Chiral Reagents, Auxiliaries, and Premetalated Nucleophiles
作者:Esa T. T. Kumpulainen、Byungsoo Kang、Michael J. Krische
DOI:10.1021/ol200735r
日期:2011.5.6
The C(21)-C(40) fragment of fibrinogen receptor inhibitor tetrafibricin was prepared in 12 steps from propane diol (longest linear sequence). In this approach, 6 C-C bonds are formed via asymmetric iridium catalyzed transfer hydrogenative carbonyl allylation and 2 C=C bonds are formed via Grubbs olefin cross-metathesis.