Flexible synthesis of montanine-like alkaloids: revisiting the structure of montabuphineElectronic supplementary information (ESI) available: 1H NMR, 13C NMR spectra of new products and experimental details. CCDC 867573 (11), 867574 (12), 867575 (14b), 871431 (14c) and 867576 (15b). For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c1cc11949d

An efficient and stereocontrolled synthetic strategy towards the synthesis of montanine-like alkaloids was developed. Our results suggest that the structure elucidation for natural montabuphine needs further elaboration. An efficient and stereocontrolled synthetic strategy towards the synthesis of montanine-like alkaloids was developed. Our results suggest that the structure elucidation for natural montabuphine needs further elaboration.