CHEMISTRY LETTERS, pp. 259-262, 1990. 1990 The Chemical Society of Japan Neighbouring Group Participation in the Biogenesis of the Vinyl Bromide Moiety of Chainigrene Metabolites t José DARIAS, Aurelio SAN-MARTIN, f and Juana ROVIROSA1* Instituto de Productos Naturales Orgânicos del С.SIС, Carretera de la Esperanza, 2, La Laguna, Tenerife, Canary Islands, Spain Departamento de Química, Facultad de Ciencias, Universidad de Chile, Santiago de ...