benzyl (3S,5R)-3-(acetoxymethyl)-5-((R)-1-aminobut-3-en-1-yl)piperidine-1-carboxylate

(3S,5R,1'S)-(+)-3-acetoxymethyl-5-(1'-methanesulfonyloxybut-3'-enyl)-1-piperidine-1-carboxylic acid benzyl ester

(3S,5R,1'R)-(+)-3-acetoxymethyl-5-(1'-acryloylaminobut-3'-enyl)-1-piperidine-1-carboxylic acid benzyl ester

金雀花碱

(6R,7R,9R)-(+)-N-benzyloxycarbonyl-5,6-dihydro-cytisine