(3R,4S)-1-(buta-2,3-dien-1-yl)-4-((R)-1-methoxy-2-methylbuta-2,3-dien-1-yl)-3-phenoxyazetidin-2-one

(3R,4S)-1-(buta-2,3-dien-1-yl)-4-((R)-1-methoxy-2-phenylbuta-2,3-dien-1-yl)-3-phenoxyazetidin-2-one

(3R,4S)-1-(buta-2,3-dien-1-yl)-4-((R)-1-methoxy-2-(4-methoxyphenyl)buta-2,3-dien-1-yl)-3-phenoxyazetidin-2-one

(6R,8R,9R)-6-methyl-4,5-dimethylene-9-phenoxy-1-azabicyclo[6.2.0]decane-7,10-dione