Tetrahydrofuran → HCID 12020042, compound

HRID 2268297Notes

Reaction equation

HRID 2268297 reaction equation
[Si:1]([O:8][C@@H:9]1[C@@:37]2([CH3:38])[C:13](=[CH:14][CH:15]=[C:16]3[C@@H:36]2[CH2:35][CH2:34][C@@:33]2([CH3:39])[C@H:17]3[CH2:18][CH:19]=[C:20]2[C@@H:21]([S:23]C(OC2C=CC=CC=2)=O)[CH3:22])[CH2:12][C@@H:11]([OH:40])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].Br[CH2:42][C:43]#[C:44][C:45]([CH3:48])([OH:47])[CH3:46].O1CCCC1.[OH-].[K+]>CO>[Si:1]([O:8][C@@H:9]1[C@@:37]2([CH3:38])[C:13](=[CH:14][CH:15]=[C:16]3[C@@H:36]2[CH2:35][CH2:34][C@@:33]2([CH3:39])[C@H:17]3[CH2:18][CH:19]=[C:20]2[C@@H:21]([S:23][CH2:42][C:43]#[C:44][C:45]([OH:47])([CH3:48])[CH3:46])[CH3:22])[CH2:12][C@@H:11]([OH:40])[CH2:10]1)([C:4]([CH3:6])([CH3:7])[CH3:5])([CH3:3])[CH3:2]

Participants

6

Reactant 4

HCID 8028TetrahydrofuranHCID 14797Potassium HydroxideHCID 12019512HCID 12019512, compoundHCID 22027697HCID 22027697, compound

Product 1

HCID 12020042HCID 12020042, compoundYield 73.2%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Under the same conditions as in Example 3, 1α-(tert-butyldimethylsilyloxy)-3β-hydroxy-20(S)-phenoxycarbonylthiopregna-5,7,16-triene (59.4 mg, 0.102 mmol), 5-bromo-2-methyl-3-pentyn-2-ol (90.5 mg, 0.511 mmol), tetrahydrofuran (1 ml) and 1M KOH solution in methanol (1 ml) were reacted and worked up, and then the residue was purified by preparative thin layer chromatography (0.5 mm×2, dichloromethane:ethyl acetate=5:1, developed twice) to give the title compound as a colorless oil (41.6 mg, 73%).

Workup

  1. customthe residue was purified by preparative thin layer chromatography (0.5 mm×2, dichloromethane

Sources & evidence

ORD record
ord-e6b746d564c749f2b2a97d0bbc6ffd85
Source dataset
uspto-grants-2001_12
Patent number
US06326503B1

Reaction notes

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