Selective polarization transfer from proton to adjacent carbon was accompli
shed by either selective cross-polarization or selective refocused-INEPT. M
agnetization was transferred in the subsequent step to remote carbons separ
ated by one, two or three bonds. The acquired data were processed by a new
symmetrization protocol resulting in the signal-to-noise ratio enhancement
by a factor of root 2. Copyright (C) 1999 John Wiley & Sons, Ltd.