Bio-inspired polyene cyclization: aziridinyl polyene cyclization catalyzed by InBr3Electronic supplementary information (ESI) available: Detailed experimental procedures, 1H NMR, 13C NMR and analytical data for all compounds. CCDC 715056 and 715057 for 2and 4d. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b903696b - Zhao, Yu-Jun; Tan, Li-Jun Serena; Li, Bin; Li, Si-Min; Loh, Teck-Peng (Chemical Communications, 2009)