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ChemicalBook CAS DataBase List 21-Deacetoxy Deflazacort
13649-88-2

21-Deacetoxy Deflazacort synthesis

9synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 6 steps
1: Py
2: MeSO2Cl, SO2, collidine / dimethylformamide
3: aq. KOH / methanol / Heating
4: aq. CrO3 / acetone
5: (i) Br2, aq. HBr, AcOH, dioxane, (ii) LiBr, Li2CO3, DMF
6: (i) AcNHBr, HClO4, THF, (ii) Cr(OAc)2, nBuSH, DMSO

References:

Nathansohn,G. et al. [Steroids,1969,vol. 13,p. 383 - 397]

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