【Abstract】 Manganese(Ⅲ)5,10,15tris(tolyl)20(4hydroxyphenyl)porphyrin covalently attached to Merrifields peptide resin was prepared.The catalysts exhibit high reactivity and βselectivity selectivity toward the epoxidation of cholest5ene derivatives with PhIO.Under mild reaction conditions,the catalyst was consecutively reused four times without detectable catalyst leaching,and gave over 90% epoxide yield and over 99% βselectivity,respectively.更多还原