... J. Heterocyclic Chem., 19, 1061 (1982). ... an M*— 16 peak appeared in that of 6 (6). The structural disparity between 8 and 9 was clarified by comparison of the chemical shifts of ... 6 0.97 (3H, t, -CH3, J = 8 Hz), 1.85 (2H, m, -CH2-), 3.44 (IH, broad 8, -OH), 4.80 (IH, t, -CH,-, J - 8 Hz ...