A RuPHOX-Ru catalyzed selective asymmetrichydrogenation of exocyclic α,β-unsaturated ketones has been developed, furnishing the corresponding chiral exocyclic allylic alcohols in high yields and with up to >99.5% ee. The reaction could be performed on a gram scale with a relatively low catalyst loading (up to 10000 S/C) without any loss in reaction activity and enantioselectivity. The resulting hydrogenated
已开发出RuPHOX-Ru催化的环外α,β-不饱和酮的选择性不对称氢化,可提供高收率和最高> 99.5%ee的相应手性环外烯丙基醇。该反应可以以克级进行,具有相对较低的催化剂负载量(最高10000 S / C),而没有任何反应活性和对映选择性的损失。所得的氢化产物可以容易地转化为具有高不对称性能的几种生物活性化合物。不对称方案为合成手性环外烯丙基醇提供了一种有效的方法。
Iridium‐Catalyzed Highly Enantioselective Hydrogenation of Exocyclic α,β‐Unsaturated Carbonyl Compounds
By using the iridium complex of a phosphine-oxazoline ligand with an axis-unfixed biphenyl backbone, a highlyenantioselectivehydrogenation of the CC bond of exocyclic α,β-unsaturated carbonyl compounds to afford α-chiral cyclic ketones, lactones and lactams was developed.
This invention is directed to a tetrahydro-cyclopentyl pyrazole cannabinoid modulator compound of formula (I):
and a method for use in treating, ameliorating or preventing a cannabinoid receptor mediated syndrome, disorder or disease.
This invention is directed to a tetrahydro-cyclopentyl pyrazole cannabinoid modulator compound of formula (I):
and a method for use in treating, ameliorating or preventing a cannabinoid receptor mediated syndrome, disorder or disease.