New stereoselective beckmann-type rearrangement leading to ring contraction
作者:Andreas Fredenhagen、Heinrich H. Peter
DOI:10.1016/0040-4020(95)00978-7
日期:1996.1
In a new stereospecific reaction the known oxime TAN-1030A gave rise to a ringcontraction to yield compound 2 closely related to the metabolite K-252a. The structure was elucidated by spectroscopic comparison with K-252a. The compound strongly inhibited protein kinase C with IC50 values of 0.18 μM. This reaction suggests that TAN-1030A is a biosynthetic precursor of K-252. The absolute stereochemistry