137043-30-2Relevant articles and documents
One-pot α-amidosulfone-mediated variation of the pictet-Spengler tetrahydroisoquinoline synthesis, suitable for amide-type substrates
Arroyo, Francisco J.,López-Alvarado, Pilar,Ganesan,Menéndez, J. Carlos
, p. 5720 - 5727 (2014/11/07)
The development of Pictet-Spengler reactions from amide substrates is a challenging problem. We report here that the reaction between amide-type compounds (including carbamates, amides, ureas and diketopiperazines), aldehydes and p-toluenesulfinic acid constitutes an efficient method for the preparation of tetrahydroisoquinolines or pyrazino-[2,1-b]isoquinolines. Unlike previously known methods, this one-pot Pictet-Spengler protocol avoids the need for strong Lewis or Br?nsted acid catalysts.
Saframycin synthetic studies
Shawe, Thomas T.,Liebeskind, Lanny S.
, p. 5643 - 5666 (2007/10/02)
A conceptually simple and direct synthetic route to racemic saframycyn B, a bis-isoquinoline quinone antitumor antibiotic, was studied relying on transformations of a key C-2 symmetric intermediate.