(24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene

Base Information

Chemical Name:(24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene
CAS No.:55651-19-9
Molecular Formula:C₄₄H₆₂O₅Si
Molecular Weight:699.059
Hs Code.:

Synonyms:

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Chemical Property of (24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene

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Technology Process of (24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene

There total 27 articles about (24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

: 66414-43-5
3β-(tetrahydro-2H-pyran-2-yloxy)chol-5-en-24-ol

: 55651-19-9
(24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene

Guidance literature:: Multi-step reaction with 11 steps

1: pyridine / CH₂Cl₂ / 24 h / Ambient temperature

2: 48 percent / 18-crown-6 / dimethylformamide / 3 h / 60 - 80 °C

3: 63 percent / KOH / H₂O; ethanol / 48 h / 140 °C

4: 79 percent / CH₂Cl₂

5: 1.) n-BuLi, dicyclohexylamine, 2.) I₂ / tetrahydrofuran / 1.) -78 deg C, 10 min -> room temperature, 5 min, 2.) -78 deg C, 5 min

6: 1.) silver trifluoroacetate, silver oxide, 2.) KOH / 1.) CH₃CN, Et₂O, room temperature, 20 h, 2.) THF, CH₃OH, room temperature, 16 h

7: CH₂Cl₂ / 0 °C

8: p-TsOH / CH₂Cl₂; methanol / 3 h / Ambient temperature

9: tetrahydrofuran / 0.25 h / -75 °C

10: 34 mg / pyridine / CH₂Cl₂ / 12 h / Ambient temperature

11: 0.17 h / 70 °C

With pyridine; potassium hydroxide; n-butyllithium; 18-crown-6 ether; iodine; silver trifluoroacetate; toluene-4-sulfonic acid; N-cyclohexyl-cyclohexanamine; silver(l) oxide; In tetrahydrofuran; methanol; ethanol; dichloromethane; water; N,N-dimethyl-formamide;

Reference yield:

: 5255-17-4
3β-hydroxy-5-cholenoic acid

: 55651-19-9
(24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene

Guidance literature:: Multi-step reaction with 12 steps

1: 1.) p-TsOH, 2.) LiAlH₄ / 1.) CH₂Cl₂, 0 deg C, 4 h, 2.) THF, 60 deg C, 4 h

2: pyridine / CH₂Cl₂ / 24 h / Ambient temperature

3: 48 percent / 18-crown-6 / dimethylformamide / 3 h / 60 - 80 °C

4: 63 percent / KOH / H₂O; ethanol / 48 h / 140 °C

5: 79 percent / CH₂Cl₂

6: 1.) n-BuLi, dicyclohexylamine, 2.) I₂ / tetrahydrofuran / 1.) -78 deg C, 10 min -> room temperature, 5 min, 2.) -78 deg C, 5 min

7: 1.) silver trifluoroacetate, silver oxide, 2.) KOH / 1.) CH₃CN, Et₂O, room temperature, 20 h, 2.) THF, CH₃OH, room temperature, 16 h

8: CH₂Cl₂ / 0 °C

9: p-TsOH / CH₂Cl₂; methanol / 3 h / Ambient temperature

10: tetrahydrofuran / 0.25 h / -75 °C

11: 34 mg / pyridine / CH₂Cl₂ / 12 h / Ambient temperature

12: 0.17 h / 70 °C

With pyridine; potassium hydroxide; lithium aluminium tetrahydride; n-butyllithium; 18-crown-6 ether; iodine; silver trifluoroacetate; toluene-4-sulfonic acid; N-cyclohexyl-cyclohexanamine; silver(l) oxide; In tetrahydrofuran; methanol; ethanol; dichloromethane; water; N,N-dimethyl-formamide;

Reference yield:

: 66414-44-6
3β-(tetrahydro-2H-pyran-2-yloxy)chol-5-en-24-al

: 55651-19-9
(24S)-3β,24-dibenzoyloxy-25-trimethylsilyloxycholest-5-ene

Guidance literature:: Multi-step reaction with 8 steps

1: 1.4 g / tetrahydrofuran / 3 h / Ambient temperature

2: 115.4 mg / pyridinium dichromate / CH₂Cl₂; dimethylformamide / 2 h / Ambient temperature

3: 35.8 mg / lithium aluminium hydride, ethanol, (S)-(-)-2,2'-dihydroxy-1,1'-binaphthyl / tetrahydrofuran / -90 °C

4: 49.2 mg / t-butyl hydroperoxide, VO(acac)2 / benzene / Ambient temperature

5: 11 mg / lithium aluminium hydride / tetrahydrofuran / Heating

6: 2M-aq. hydrochloric acid / methanol / Ambient temperature

7: pyridine / Ambient temperature

8: 61 mg / 50 °C

With pyridine; hydrogenchloride; tert.-butylhydroperoxide; lithium aluminium tetrahydride; dipyridinium dichromate; bis(acetylacetonate)oxovanadium; ethanol; (S)-[1,1']-binaphthalenyl-2,2'-diol; In tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide; benzene;