ol7b01898_si_004.cif (80.66 kB)
Tandem Oxidative Dearomatizing Spirocyclizations of Propargyl Guanidines and Ureas
dataset
posted on 2017-07-21, 17:38 authored by Ravi P. Singh, Jayanta Das, Muhammed Yousufuddin, Delphine Gout, Carl J. LovelyTreatment
of propargyl ureas or guanidines with iodosobenzene diacetate
results in an oxidative tandem amination/etherification dearomatizing
spirocyclization. This transformation leads directly to the complete
framework of the Leucetta alkaloids, spirocalcaridine
A and B.
