Route to Benzimidazol-2-ones via Decarbonylative Ring Contraction of Quinoxalinediones: Application to the synthesis of flibanserin, a drug for treating hypoactive …

RD Shingare, AS Kulkarni, RL Sutar, DS Reddy - ACS omega, 2017 - ACS Publications
A simple and practical method to access a variety of benzimidazol-2-ones is reported here.
A series of N-alkyl-substituted benzimidazol-2-ones were synthesized by decarbonylative …

Multi-gram scale synthesis of hunanamycin A, an antibiotic natural product from the marine source

RD Shingare, S ada Farhana, DS Reddy - Tetrahedron Letters, 2016 - Elsevier
A simple, practical, and biomimetic approach to access antibiotic natural product
hunanamycin A starting from readily available inexpensive material Riboflavin is disclosed …

Cyclic compounds and process for the preparation thereof

DS Reddy, RD Shingare - US Patent 11,002,524, 2021 - Google Patents
Hunanamycin A is the first natural product with a pyrido [1, 2, 3-de] quinoxaline-2, 3-dione
core and was isolated from a marine-derived Bacillus hunanensis. Hunanamycin A is the …