US Patent Issued to Council of Scientific & Industrial Research on Nov. 4 for "Indole-ynone mediated benzoannulation process for the preparation of carbazoles, carbazomycin A, calothrixin B and staurosporinone" (Indian Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,893, issued on Nov. 4, was assigned to Council of Scientific & Industrial Research (New Delhi).

"Indole-ynone mediated benzoannulation process for the preparation of carbazoles, carbazomycin A, calothrixin B and staurosporinone" was invented by Srihari Pabbaraja (Hyderabad, India), Goverdhan Mehta (Hyderabad, India), Ramesh Samineni (Hyderabad, India) and Shweta Singh (Hyderabad, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to carbazoles of general formula (I), and process for the preparation thereof: wherein 'R1' is H, C1-C6 alkyl, benzyl, or allyl; R2 is H, C1-C6 alkyl, cyclopropyl, phenyl, aryl, heteroaryl, or...