Alkylated Levoglucosan in Organic Synthesis. : A Formal Total Synthesis of Elaiophylin

抄録

Levoglucosan (8) has been found to be a useful material for the synthesis of chiral compounds having five contiguous chiral centers (14). Conversion of 8 to 14 involves two trans-diaxial openings of epoxides by nucleophilic reagents. Among 14, 14c was successfully transformed into the intermediate 5 for the total synthesis of elaiophylin (1). Efficient lactonization of the carboxylic acid 33 has been achieved by use of Yamaguchi's method.