Diastereocontrolled synthesis of unit A of cryptophycin
摘要:
Cryptophycin fragment A was prepared in I I steps from protected methyl (R)-mandelate 4. A diastereoselective addition of magnesium acetylide to methyl mandelate and a Sharpless epoxidation followed by regioselective opening of the resulting epoxide allowed the synthesis of this intermediate in high diastereomeric purity. (C) 2001 Elsevier Science Ltd. All rights reserved.
Diastereocontrolled synthesis of unit A of cryptophycin
摘要:
Cryptophycin fragment A was prepared in I I steps from protected methyl (R)-mandelate 4. A diastereoselective addition of magnesium acetylide to methyl mandelate and a Sharpless epoxidation followed by regioselective opening of the resulting epoxide allowed the synthesis of this intermediate in high diastereomeric purity. (C) 2001 Elsevier Science Ltd. All rights reserved.