上游原料
ethyl 2-(triphenyl-lambda(5)-phosphanylidene)acetate; (Carbethoxymethylene)triphenylphosphorane(1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carbonyl chloride; (-)-Camphanic chloride3-chloro-3-methyl-1-butyne5-Methyl-1,3-benzenediol; Orcinol2,4-dihydroxy-6-methylbenzaldehydeethyl (E)-3-(2,4-dihydroxy-6-methylphenyl)-2-propenoate7-hydroxy-5-methyl-2H-chromen-2-one7-[(1,1-dimethyl-2-propynyl)oxy]-5-methyl-2H-chromen-2-one5,8,8-trimethyl-2H,8H-pyrano[2,3-f]chromen-2-one(9R,10R)-9,10-dihydroxy-5,8,8-trimethyl-9,10-dihydro-2H,8H-pyrano[2,3-f]chromen-2-one
