References
- Greene , T. W. 1981 . Protective Groups in Organic Synthesis , New York : John Wiley & Sons .
- Iwashige , T. and Saeki , H. 1967 . Chem. Pharm. Bull. , 15 : 1803
- Kieczykowski , G. R. , Quesada , M. L. and Schessinger , R. H. 1980 . J. Am. Chem. Soc. , 102 : 782