3β-tertiobutyldimethylsilyloxy-18-carboxaldehyde-20,20-ethylenedioxy-pregn-5-ene

四苯基碘化膦

4,6-dimethoxy-5-methyl-2H-pyran-2-one

(S)-1-(Diphenyl-phosphinoyl)-2-isobutyl-aziridine

1-乙酰基靛红