Pyridine → HCID 22872541, compound

HRID 1941178Notes

Reaction equation

HRID 1941178 reaction equation
[C:1]([O:4][C@H:5]1[CH2:31][CH2:30][C@@:29]2([CH3:32])[C@@H:7]([CH2:8][CH2:9][C@@H:10]3[C@@H:28]2[C@H:27]([O:33][C:34](=[O:36])[CH3:35])[C@@H:26]([OH:37])[C@@:25]2([CH3:38])[C@H:11]3[CH2:12][C@@H:13]3[O:18][C@@:17]4([O:24][CH2:23][C@H:21]([CH3:22])[CH2:20][CH2:19]4)[C@@H:15]([CH3:16])[C@@H:14]32)[CH2:6]1)(=[O:3])[CH3:2].N1C=CC=CC=1>C(Cl)Cl.[O-2].[O-2].[O-2].[Cr+6]>[C:1]([O:4][C@H:5]1[CH2:31][CH2:30][C@@:29]2([CH3:32])[C@@H:7]([CH2:8][CH2:9][C@@H:10]3[C@@H:28]2[C@H:27]([O:33][C:34](=[O:36])[CH3:35])[C:26](=[O:37])[C@@:25]2([CH3:38])[C@H:11]3[CH2:12][C@@H:13]3[O:18][C@@:17]4([O:24][CH2:23][C@H:21]([CH3:22])[CH2:20][CH2:19]4)[C@@H:15]([CH3:16])[C@@H:14]32)[CH2:6]1)(=[O:3])[CH3:2]

Participants

5

Reactant 2

HCID 1049PyridineHCID 22872539HCID 22872539, compound

Product 1

HCID 22872541HCID 22872541, compound

Reagents, catalysts & solvents 2

HCID 10219390chromium (VI) trioxideCatalystHCID 6344DichloromethaneSolvent

Procedure

(3β,5α,11α,12β,25R)3,11-di(acetoxy)spirostan-12-ol was oxidized with chromium trioxide and pyridine in methylene chloride according to the procedure described in Org. Syn., 1976, 55, 84 to give the title compound.

Sources & evidence

ORD record
ord-38ccd61d458c411c9c8a48688208335b
Source dataset
uspto-grants-1997_12
Patent number
US05703052

Reaction notes

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