The invention provides a compound of formula I:
or a salt thereof, wherein R
1
, R
2
, R
3
, R
4
, L
1
, L
2
and Y have any of the values described in the specification, as well as compositions comprising a compound of formula I. The compounds are useful for labeling penicillin-binding proteins (PBPs).
The invention provides a compound of formula I:
or a salt thereof, wherein R1, R2, R3, R4, L1, L2 and Y have any of the values described in the specification, as well as compositions comprising a compound of formula I. The compounds are useful for labeling penicillin-binding proteins (PBPs).
本发明提供了一种式 I 的化合物:
或其盐,其中 R1、R2、R3、R4、L1、L2 和 Y 具有说明书中描述的任一数值,以及包含式 I 化合物的组合物。这些化合物可用于标记青霉素结合蛋白(PBPs)。
PU, YUNLONG;MARTIN, FIONNA M.;VEDERAS, JOHN C., J. ORG. CHEM., 56,(1991) N, C. 1280-1283
作者:PU, YUNLONG、MARTIN, FIONNA M.、VEDERAS, JOHN C.
DOI:——
日期:——
Synthesis and acylation of salts of L-threonine .beta.-lactone: a route to .beta.-lactone antibiotics
作者:Yunlong Pu、Fionna M. Martin、John C. Vederas
DOI:10.1021/jo00003a062
日期:1991.2
The synthesis and N-acylation of beta-lactones derived from L-threonine and L-allo-threonine were investigated. Treatment of N-[(o-nitrophenyl)sulfenyl]-L-threonine (7a) and N-[(o-nitrophenyl)sulfenyl]-L-allo-threonine (7b) with 4-bromobenzenesulfonyl chloride in pyridine at -43 to -0-degrees-C gives the corresponding-beta-lactones 8a and 8b, respectively, in 45-56% yields. These can be deprotected with thiophenol or p-thiocresol in the presence of p-toluenesulfonic acid to produce optically pure salts of L-threonine-beta-lactone (9a) and its allo isomer 9b (65-92%). Compound 9a is readily acylated by reagents such as acid chlorides (e.g., acetyl, benzoyl) and mixed anhydrides to afford N-acyl-beta-substituted-beta-lactones such as 10 (antibiotic SQ 26,517), 14, 15, and 16 in good yield (84-92%). Reaction of beta-lactones 8a, 8b, and 9a with HBr in acetic acid results in nucleophilic ring opening by bromide at the beta-position to give pure isomers of 2-amino-3-bromobutanoic acid.
Comparison of Bioorthogonal β‐Lactone Activity‐Based Probes for Selective Labeling of Penicillin‐Binding Proteins
作者:Nathaniel W. Brown、Joshua D. Shirley、Andrew P. Marshall、Erin E. Carlson
DOI:10.1002/cbic.202000556
日期:2021.1.5
Isoform‐specific targeting: The synthesis and comparison of selective, bioorthogonal, activity‐basedprobes for penicillin‐bindingproteins (PBPs) is reported. We demonstrate the expanded functional utility of bioorthogonalprobes compared to fluorescent analogues and explore design considerations for the development of bioorthogonalprobes that are applicable beyond the probes described in this work.