Transformation of (.+-.)-ophiocarpine and (.+-.)-13-epiophiocarpine to (.+-.)-.ALPHA.- and (.+-.)-.BETA.-hydrastine with complete retention of configuration.
Transformation of (.+-.)-ophiocarpine and (.+-.)-13-epiophiocarpine to (.+-.)-.ALPHA.- and (.+-.)-.BETA.-hydrastine with complete retention of configuration.