| abstract |
(57) [Summary]nAn object of the present invention is to provide 2,3-dimethoxy-5-methyl- Poor water solubility of 1,4-benzoquinone compounds and its reduction process Can solve drug delivery problems at the same time Derivation of xy-5-methyl-1,4-dihydroxybenzene compounds Is to provide the body.nSOLUTION: General formula (I)nEmbedded imagen … (I) (where R 1 And R 2 Is a hydrogen atom or Means a carboxylic acid residue having a nitrogen substituent, One is a carboxylic acid residue having a nitrogen substituent. R 3 IsnEmbedded imagen n means an integer of 1 to 10. R 4 Is a hydrogen atom or It means a protecting group for a hydroxyl group. 2,3-Dimethyaki represented by) C-5-methyl-1,4-dihydroxybenzenecarboxylic acid Ter derivatives. |