Author/Authors :
Bailey، نويسنده , , Patrick D. and Beard، نويسنده , , Mark A. and Cresswell، نويسنده , , Mark and Dang، نويسنده , , Hoa P.T. and Pathak، نويسنده , , Ravindra B. and Phillips، نويسنده , , Theresa R. and Price، نويسنده , , Richard A.، نويسنده ,
Abstract :
Careful choice of the N-protecting group provides crucial conformational control, allowing ring-closure to the indole 3-position in the late stages of the synthesis of ajmaline alkaloids; the choice of protecting group and reducing agent can also provide access to either the natural or epi configuration at the indole 2-position.