Once the ring is opened, the desired derivative groups can be introduced. The choice of reagents and reaction conditions is crucial for achieving regioselectivity. For example, different protecting groups can be used to control the regioselectivity of reactions.
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Benzoic acid (2R,4R,5S,6S)-4-(bis-ethylsulfanyl-methyl)-6-[(R)-(tert-butyl-diphenyl-silanyloxy)-methylcarbamoyl-methyl]-2-(4-methoxy-phenyl)-[1,3]dioxan-5-yl ester
1,3-dihydro-1,3-dimesityl-2-thia-1-phospha-3-boraphenalene
