Studies into the Biosynthesis and Chemical Synthesis of Indolocarbazoles and Related Heterocyclic Compounds. Metalation of Indole-6-Carboxamide %D8%B1%D8%B3%D8%A7%D9%84%D8%A9 %D8%AF%D9%83%D8%AA%D9%88%D8%B1%D8%A7%D9%87