In order to understand precise biological roles of sulfur dioxide (SO2), reliable SO2 donors, compounds that produce SO2 under physiological conditions, are necessary. The design and development of 1-phenyl-benzosultine as an efficient SO2 donor is reported. This compound undergoes cycloreversion to generate SO2 upon dissolution in aqueous buffer at 37 degrees C with a yield of 89% and a half-life of 39 min and shows SO2-like biological activity in a DNA cleavage assay.
Full chirality transfer in the synthesis of hindered tertiary boronic esters under in situ lithiation–borylation conditions
作者:D. J. Blair、S. Zhong、M. J. Hesse、N. Zabaleta、E. L. Myers、V. K. Aggarwal
DOI:10.1039/c6cc00536e
日期:——
Using non-cryogenic lithiation-borylation, sterically hindered tertiary neopentyl glycol boronicesters can be prepared from secondary benzylic carbamates with full chirality transfer.