Ds. Carter et Dl. Vanvranken, PHOTOOXIDATION OF 2,2'-INDOLYLINDOLINES TO 2,2'-BIINDOLES - MILD FORMATION OF DITRYPTOPHAN CROSS-LINKS, Tetrahedron letters, 37(32), 1996, pp. 5629-5632
2,2'-Indolylindolines undergo facile photooxidation to form symmetrica
l fluorescent 2,2'-biindoles. The reaction proceeds slowly in air unde
r ambient light, but direct irradiation facilitates the reaction. Pept
ide and N-glycosylated substrates are compatible with this mild photoo
xidation. Copyright (C) 1996 Elsevier Science Ltd