Acknowledgment. This research was supported by PHS Grant HL 25848. NMR spectra were obtained through the auspices of the Northeast Regional NSF/ NMR Facility at Yale University, which was supported by the NSF Chemistry Division Grant CHE 7916210. ... Registry No. la, 80127-55-5; lb, 82740-79-2; IC, 82740-80-5; Id, 82740-81-6; 2a, 82740-82-7; 2b, 82740-83-8; 20, 82740-84-9; 2d, 82740-85-0; 3,82740-86-1; 4,2873-29-2; 5,52485-06-0; ...
[Behling, James R.; Babiak, Kevin A.; Ng, John S.; Campbell, Arthur L.; Moretti, Robert; et al. Journal of the American Chemical Society, 1988 , vol. 110, # 8 p. 2641 - 2643]