The present invention relates to compounds that inhibit KRas G12C. In particular, the present invention relates to compounds that irreversibly inhibit the activity of KRas G12C, pharmaceutical compositions comprising the compounds and methods of use therefor.
A new synthesis of (S)-3-amino-4-methoxy-butan-1-ol is reported. The synthesis is based on the preparation of the primary, nonprotected enamine of the commercially available β-keto ester methyl 4-methoxy-3-oxo-butanoate and asymmetric catalytic enamine hydrogenation using a Ru-MeOBIPHEP catalyst. Alternatively, the process is performed by asymmetric catalytic reductive amination of the β-keto ester
A process for producing a β-hydroxyester by reacting an epoxide, an alcohol and carbon monoxide in the presence of a cobalt carbonyl compound as catalyst,
which is characterized in using as co-catalyst, a pyridine derivative having an amino substituent of formula (1),
wherein R
1
and R
2
are independently hydrogen, formyl, acyl, alkoxycarbonyl, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, substituted or unsubstituted aryl, or R
1
and R
2
may be taken together with the adjacent nitrogen atom to form a ring, and n is an integer of 1 or 2.
The present invention relates to compounds that inhibit KRas G12C. In particular, the present invention relates to compounds that irreversibly inhibit the activity of KRas G12C, pharmaceutical compositions comprising the compounds and methods of use therefor.
Catalytic Ionic Hydrogenation of Ketones by {[Cp*Ru(CO)<sub>2</sub>]<sub>2</sub>(μ-H)}<sup>+</sup>
作者:Paul J. Fagan、Mark H. Voges、R. Morris Bullock
DOI:10.1021/om901005k
日期:2010.2.22
[Cp*Ru(CO)(2)](2)(mu-H)}+OTf- functions as a homogenous catalyst precursor for hydrogenation of ketones to alcohols, with hydrogenations at 1 mol % catalyst loading at 90 degrees C under H-2 (820 psi) proceeding to completion and providing > 90% yields. Hydrogenation of methyl levulinate generates gamma-valerolactone, presumably by ring-closing of the initially formed alcohol with the methyl ester. Experiments in neat Et2C=O show that the catalyst loading can be <0.1 mol% and that at least 1200 turnovers of the catalyst can be obtained. These reactions are proposed to proceed by an ionic hydrogenation pathway, with the highly acidic dihydrogen complex [Cp*Ru(CO)(2)(eta(2)-H-2)](+) OTf- being formed under the reaction conditions from reaction of H-2 with [Cp*Ru(CO)(2)]2(mu-H)](+) OTf-