Affiliation: | (1) Zoologisches Institut, Fachbereich Biologie der Universität, Siesmayerstrasse 70, D-6000 Frankfurt, Germany;(2) Institut für Organische Chemie der Universität, Henkestrasse 42, D-8520 Erlangen, Germany;(3) Present address: Baker Laboratory, Chemistry Department, Cornell University, 14 853-1301 Ithaca, NY, USA;(4) Present address: EMBRAPA/CNPDA, C.P. 69, 13 820 Jaguariúna, SP, Brazil;(5) Present address: CPQBA/UNICAMP, C.P. 6171, 13 083 Campinas, SP, Brazil |