Development of trityl-based photolabile hydroxyl protecting groups

Academic Article


  • A series of trityl-based photolabile hydroxyl protecting groups have been examined. These PPGs evolve from the traditional acid-labile trityl protecting group with proper electron-donating substituents. Structure-reactivity relationships have been explored. A m-dimethylamino group is crucial to achieve high photochemical deprotection efficiency. The o-hydroxyl group in 8 greatly improves the yield of the photochemical deprotection reaction, compared with the corresponding o-methoxyl-substituted counterpart 7. However, comparison between the photoreactions of 9 and 11 does not show similar structural relevance. The PPG in ether 1 (i.e., DMATr group) is structurally simple and easy to prepare and install. Its deprotection can be successfully carried out with irradiation of sunlight without requirement of photochemical devices. © 2011 American Chemical Society.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Zhou L; Yang H; Wang P
  • Start Page

  • 5873
  • End Page

  • 5881
  • Volume

  • 76
  • Issue

  • 15