Ichikawa Y, Kaneno D, Saeki N, Minami T, Masuda T, Yoshida K, Kondo T, Ochi R. Protecting group-free method for synthesis of N-glycosyl carbamates and an assessment of the anomeric effect of nitrogen in the carbamate group.
Carbohydr Res 2021;
505:108280. [PMID:
34023127 DOI:
10.1016/j.carres.2021.108280]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 10/22/2022]
Abstract
The first protecting group-free synthesis of N-glycosyl carbamates has been developed through reaction of d-glucose with n-butyl carbamate in acidic aqueous media. The structures of the N-glucosyl carbamates were unambiguously determined by comparison with authentic samples, prepared using the isocyanide method. With this protective group-free method for synthesis of N-glycosyl carbamates in hand, an anomeric pair of N-xylopyranosyl carbamates were prepared and used to assess the anomeric effect of nitrogen in the carbamate group.
Collapse