The absolute configurations as shown in V and VI were deduced from the ORD aata of V, negative Cotton effect (c 0.002 In heO;i),$I 308 -5Ooo (troWh), 191233 +2500° (peak), and VI, positive Cotton effect (c 0.002 ln MeOR), [?I 308 -100' (peak),@] 270 -500' (trough),...