SEARCH Articles Figures Tables 0-CARBOLINE, 1,2,3,4-TETRAHYDRO 0-Carbolines 1- alkyl-1,2,3,4-tetrahydro 0-Carbolines 1.2.3.4- tetrahydro 2-Substituted alkyl 3- Alkyl substitute Carboline Carbolines Substitution alkylation