Products Categories
| CAS No.: | 56786-63-1 |
|---|---|
| Name: | Spirostan-6-one, 3,5-dihydroxy-, (3b,5a,25R)- |
| Molecular Structure: | |
|
|
|
| Formula: | C27H42O5 |
| Molecular Weight: | 446.627 |
| Synonyms: | (3beta,5alpha,25R)-3,5-Dihydroxyspirostan-6-one;BB 16;Biobras 16;Brassinosteroid BB 16;DI 31; |
| EINECS: | 1312995-182-4 |
| Density: | 1.21±0.1 g/cm3 (20 oC 760 Torr) |
| Melting Point: | 268-270 oC (ethanol ) |
| Boiling Point: | 578.4±50.0 °C(Predicted) |
| Solubility: | (0.025 g/L) (25 oC) |
| Appearance: | White or off-white powder |
| PSA: | 75.99000 |
| LogP: | 4.08770 |

(25R)-3α,5-cyclo-5α-spirostan-6-one


(25R)-3β,5-dihydroxy-5α-spirostan-6-one

| Conditions | Yield |
|---|---|
| With acetic acid for 2h; Heating; | 98% |

(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 View Scheme |


(25R)-3β,5-dihydroxy-5α-spirostan-6-one

| Conditions | Yield |
|---|---|
| With TBFA In tetrahydrofuran for 6h; | 7.14 g |

(25R)-3β-(t-butyldimethylsilyloxy)-5α-spirostane-5,6β-diol


(25R)-3β,5-dihydroxy-5α-spirostan-6-one

| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: PCC / CH2Cl2 / 0 - 20 °C 2: 7.14 g / TBFA / tetrahydrofuran / 6 h View Scheme |


(25R)-3β,5-dihydroxy-5α-spirostan-6-one

| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: perchloric acid / water; tetrahydrofuran / 3 h / 20 °C 2: N-Bromosuccinimide / water; 1,4-dioxane / 2 h / 20 °C / Darkness View Scheme |

(25R)-3β,5-dihydroxy-5α-spirostan-6-one


2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl trichloroacetimidate


5α-hydroxylaxogenyl 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranoside

| Conditions | Yield |
|---|---|
| With trimethylsilyl trifluoromethanesulfonate In dichloromethane at 20℃; for 1h; Inert atmosphere; Molecular sieve; | 94% |

p-toluenesulfonyl chloride


(25R)-3β,5-dihydroxy-5α-spirostan-6-one

| Conditions | Yield |
|---|---|
| With pyridine at 20℃; for 24h; | 88% |
| With pyridine at 20℃; for 24h; | |
| With pyridine at 20℃; | |
| With pyridine |

O-carboxymethylhydroxylamine hydrochloride


(25R)-3β,5-dihydroxy-5α-spirostan-6-one

| Conditions | Yield |
|---|---|
| With pyridine at 20℃; | 88% |

(25R)-3β,5-dihydroxy-5α-spirostan-6-one


(25R)-5α-hydroxy-5α-spirosta-3,6-dione

| Conditions | Yield |
|---|---|
| With Jones reagent In water; acetone at 20℃; | 81.5% |