ChemicalBook CAS DataBase List Sarsasapogenin 3-O-β-D-galactopyranosid

Sarsasapogenin 3-O-β-D-galactopyranosid synthesis

3synthesis methods

Product Name:Sarsasapogenin 3-O-β-D-galactopyranosid
CAS Number:68422-00-4
Molecular formula:C33H54O8
Molecular Weight:578.79

Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-

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Yield: 90%

Reaction Conditions:

with methanol;sodium methylate in dichloromethane at 20; for 3.5 h;

Steps:

5.c; 14.c
Step (c) [00240] To a stirred solution of 3,6-dibenzyolated timosaponin A I (100 mg, 0.127 mmol) in anhydrous CH₂C1₂ : MeOH (2: 1, 21 mL) was added dropwise with NaOMe in MeOH (0.1 mL, 1.0 M) at room temperature to form a reaction mixture. After stirring for 3.5 hr, TLC (CH₂Cl₂:MeOH = 9: 1) indicated that all starting materials had been consumed. The reaction mixture was neutralized with Amberlite IR 120 (H⁺), filtered and concentrated. The crude product was subjected to column chromatography using CH₂Cl₂:MeOH (9: 1) to obtain Timosaponin A I (66 mg, yield 90%).

References:

CHE, Chiming;SY, Laiking;LOK, Chunnam WO2013/149580, 2013, A1 Location in patent:Paragraph 00240

367-93-1 Synthesis

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References

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68422-00-4
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References

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