The optically active asymmetric bisindole compound and its manufacturing method

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PROBLEM TO BE SOLVED : To establish a methodology for synthesizing an optically active asymmetric bisindole compound.SOLUTION : The provided optically active asymmetric bisindole compound is expressed by the following formula (2) : (where Rand Rare mutually independent and express H, halogen, alkyl group, or alkoxy group; a plurality of Rand Rmay, furthermore, be coupled at any position on the benzene ring of an indole or oxyindole skeleton; moreover, Ris an ester group; Ris H, Me, Et, Bn, Boc, MOM, MEM, SEM, or Alloc).