Additional reactions are performed to introduce substituents with the desired stereochemistry. This may involve using chiral reagents or catalysts to control the stereochemical outcome.
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(2R,3S,4R)-3,4-dihydroxy-2-(hydroxymethyl)pyrrolidine hydrochloride
2α,3α,22α,23α-tetrahydroxy-24β-methyl-B-homo-7-oxa-5α-cholestan-6-one
Lithium diisopropylamide
Pyridine
[2-((1R,3aS,4S,7aR)-6-Methoxy-4-methyl-hexahydro-furo[3,4-c]pyran-1-ylethynyl)-phenyl]-carbamic acid ethyl ester
