Divergent Synthesis of Bicyclic Iminosugars: Preparation of (−)‐Swainsonine‐Based Alkaloids and Their Inhibition Study towards α‐Human Mannosidases. - Chen, Wei‐An; Sayyad, Ashik; Chen, Chiao‐Wen; Chen, Yu‐Hsin; Cheng, Ting‐Jen R.; Cheng, Wei‐Chieh (Asian Journal of Organic Chemistry, 2019)