4-甲氧基-呋喃酮

methyl 5-(1',1'-dimethoxybenzyl)tetronate

(4R)-2,4-diphenyl-4,5-dihydro-1,3-oxazole

(4S,5R)-2,4-二苯基-4,5-二氢噁唑-5-羧酸

苄甲醚