Affiliation: | 1. Central Research Institute for Chemistry of the Hungarian Academy of Sciences , 1525, Budapest, P. O. Box 17, HUNGARY;2. Institute for Organic Chemistry Technical University , 1521, Budapest, P. O. Box 91, HUNGARY;3. Central Research Institute for Chemistry of the Hungarian Academy of Sciences , 1525, Budapest, P. O. Box 17, HUNGARY;4. Institute for Organic Chemistry Technical University , 1521, Budapest, P. O. Box 91, HUNGARY |