A New Zincate-Mediated Rearrangement Reaction of 2-(1-Hydroxyalkyl)-1-alkylcyclopropanol
作者:Kenichi Nomura、Seijiro Matsubara
DOI:10.1002/chem.200901054
日期:2010.1.11
A novel rearrangement of 2‐(1‐hydroxyalkyl)‐1‐alkylcyclopropanol has been found. It proceeds in the presence of a catalytic amount of organozinc ate complex to give vic‐diols. The rearrangement can be applied to various types of 2‐(1‐hydroxyalkyl)‐1‐alkylcyclopropanol, which can be easily prepared from the corresponding α,β‐epoxyketones and bis(iodozincio)methane. When bicyclo[13.1.0]pentadecane‐1
Stereoselective reduction of α,β-epoxy ketones with sodium borohydride in the presence of calcium chloride or lanthanum chloride. A practical preparation of erythro-α,β-epoxy alcohols
erythro-Epoxy alcohols were prepared with high stereoselectivity by NaBH4 reduction of the corresponding α,β-epoxyketones in the presence of calcium chloride or lanthanum chloride regardless of the substituents on the epoxide ring.
α,β-Epoxyketones are reduced by trimethoxysilane in the presence of a catalytic amount of lithium methoxide to yield the corresponding alcohols. This reaction system reveals divergent selectivity depending on the solvent; both anti-selectivity and syn-selectivity are observed iin less polar Et2O and in polar HMPA, respectively.
Stereoselective Reduction of α,β-Epoxy Ketones into erythro-α,β-Epoxy Alcohols with Sodium Borohydride in the Presence of Calcium Chloride
作者:Hideaki Fujii、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1246/cl.1992.967
日期:1992.6
erythro-α,β-Epoxyalcohols were prepared with high stereoselectivity by sodium borohydride reduction of the corresponding α,β-epoxyketones in the presence of calcium chloride or manganese(II) chloride regardless of the substituents on the epoxide ring.
无论环氧化物环上的取代基如何,在氯化钙或氯化锰 (II) 存在下,通过硼氢化钠还原相应的 α,β-环氧酮,以高立体选择性制备赤型-α,β-环氧醇。
salts of perindopril and their use in the therapy of hypertension
申请人:IPCA Laboratories Limited
公开号:EP1987828A1
公开(公告)日:2008-11-05
The present invention relates to a novel salts of Perindopril, namely: perindopril phthalic acid salt; perindopril tartaric acid salt; perindopril phosphate; perindopril camphor sulphonate; perindopril oxalate; perindopril citrate; perindopril-(-)-di-p-toluoyl tartarate; perindopril (+)-di-p-toluoyl tartarate; and perindopril (±)-dibenzoyltartarate.