A new NMR technique, 3D-HMBC, which is superior to conventional 2D-HMBC in its sensitivity for detection of long-range 1(H)-13C couplings is described. Copyright (C) 1996 Elsevier Science Ltd.
Furihata, K., & Seto, H. (1996). 3D-HMBC, a new NMR technique useful for structural studies of complicated molecules. Tetrahedron Letters, 37(49), 8901–8902. https://doi.org/10.1016/S0040-4039(96)02079-5