One step preparation and 1,3-dipolar cycloadditions of (S)-5-hydroxymethyl-1-pyrroline N-oxide
摘要:
The cyclic nitrone Ib has been prepared in enantiomerically pure form by direct oxidation of L-(+)-prolinol with dimethyldioxirane. A complete diastereoface differentiation has been observed in the 1,3-dipolar cycloaddition reaction of this nitrone to several 1,2-disubstituted electron deficient olefins. (C) 1997 Elsevier Science Ltd.
Strain-promoted cycloadditions of cyclic nitrones with cyclooctynes for labeling human cancer cells
作者:Craig S. McKay、Jessie A. Blake、Jenny Cheng、Dana C. Danielson、John Paul Pezacki
DOI:10.1039/c1cc13808a
日期:——
Strain-promotedcycloadditions of cyclic nitrones with cyclooctynes proceed with rate constants up to 3.38 +/- 0.31 M(-1) s(-1) in CD(3)CN, or 59 times faster than the analogous reaction of azides. This highly specific modular labeling strategy can be applied for direct labeling of proteins and for live cell imaging of cancer cells.
One step preparation and 1,3-dipolar cycloadditions of (S)-5-hydroxymethyl-1-pyrroline N-oxide
作者:Montserrat Closa、Pedro de March、Marta Figueredo、Josep Font
DOI:10.1016/s0957-4166(97)00042-6
日期:1997.4
The cyclic nitrone Ib has been prepared in enantiomerically pure form by direct oxidation of L-(+)-prolinol with dimethyldioxirane. A complete diastereoface differentiation has been observed in the 1,3-dipolar cycloaddition reaction of this nitrone to several 1,2-disubstituted electron deficient olefins. (C) 1997 Elsevier Science Ltd.