Concise stereoselective synthesis of oxaspirocycles with 1-tosyl-1,2,3-triazoles: Application to the total syntheses of (±)-tuberostemospiroline and (±)-stemona-lactamr - Junkai Fu; Hongjuan Shen; Yuanyuan Chang; Chuang Chuang Li; Jianxian Gong; Zhen Yang (Chemistry - A European Journal, 2014)