... The combined organic layer was dried (K2C03/Norite), filtered, and concentrated to give 12.2 g of a light-yellow solid. ... (c) Kohli, J. D.; Goldberg, L. I. J. Pharm. ... (e) Shamma, M. 'The boquinoline Alkaloids, Chemistry and Pharmacology"; Academic Press: New York, 1973. ...