Description     Claims     Drawing  

US5478820A   [0005] 
US6504027B1   [0006] 
WO02057266A   [0006] 
WO03026572A   [0006] 
WO9802439A   [0007]  [0025] 
WO2008062279A   [0008]  [0060]  [0061]  [0062]  [0063] 

J. Am. Chem. Soc.   [0024] 
J. Org. Chem.   [0025]