![](images/prodouct.jpg)
Antioxidant BHT 264
CAS:128-37-0
Purity:99%
Contact Now
We will contact you as soon as possible
Your Location:Home >Products >Pharmaceutical >56786-63-1
Product Details
A priority of modern agriculture is to u...
Methods for the preparation of the spiro...
(25R)-3β-acetoxy-5-hydroxy-5α-spirostan-6-one
(25R)-3β,5-dihydroxy-5α-spirostan-6-one
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; In methanol; water; for 3h; Reflux;
|
95% |
(25R)-spirostan-22α-O-3β,5α,6β-triol
(25R)-3β,5-dihydroxy-5α-spirostan-6-one
Conditions | Yield |
---|---|
With N-Bromosuccinimide; In 1,4-dioxane; water; at 20 ℃; for 2h; Darkness;
|
83% |
Multi-step reaction with 3 steps
1: 84 percent / imidazole / dimethylformamide / 3 h
2: PCC / CH2Cl2 / 0 - 20 °C
3: 7.14 g / TBFA / tetrahydrofuran / 6 h
With 1H-imidazole; pyridinium chlorochromate; In tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide;
|