The title compound (6b) was prepared from (1R)-[lD]-a-fenchocamphorone (5b), which was obtained from (+)-camphor (1) via ketopinic acid (2). Introduction of deuterium was achieved by LiAlD4 reduction of 1-bromo-a-fenchocamphorone (3), a degradation product of ketopinic acid (2).(1R)-[lD]-cu-Fenchocamphorone-quinone, a diketone whose chirality is due only to deuterium substitution, showed a small but measurable effect in CD of both low-intensity ...