cas 3870-07-3, Triamcinolone acetonide 21-acetate

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Triamcinolone acetonide acetate preparation method
The invention provides a full-novel synthesizing route for preparing triamcinolone acetonide acetate. According to the full-novel synthetic route, utilized raw materials have lower cost and more easiness in obtaining. The synthetic route comprises the steps of hydroxylating reaction raw materials and protecting, then selectively oxidizing five-membered ring double bonds, removing a protecting group, then protecting oxidized di-hydroxyl, then epoxidizing six-membered ring double bonds, performing open-ring fluorination and esterfying hydroxyl to obtain a triamcinolone acetonide product. A reaction process has easiness in operation, yields of all the steps are higher, obtained products have higher purities, byproduct generation is effectively avoided, production cost is reduced, and industrial production is facilitated.
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(2018/03/24)

NOVEL PROCESS FOR PREPARATION OF GLUCOCORTICOID STEROIDS
The present invention discloses a process for the preparation of 16, 17-acetals of pregnane derivatives having formula (I) wherein each substituent is independently selected from; R1 is H or CH3; R2 is C1-C6 linear or branched alkyl, alkynyl group or cycloalkyl group; aryl or heteroaryl group; or R1 and R2 combine to form saturated, unsaturated C3-C6 cyclic or heterocyclic ring; R3 and R4 are same or different and each independently represents H or halogen; R5 is -OH or –OCOR wherein R represents H or C1-C6 linear, branched or cyclic alkyl group that may be substituted.
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(2016/08/23)

Chemical Properties

Melting Point: 266 °C
Boiling Point: 589.4 °C at 760 mmHg
Flash Point:310.3 °C
Density: 1.314 g/cm³
Solubility:Chloroform (Slightly, Sonicated), Methanol (Slightly)
Storage Temp.:Refrigerator
PKA: 13.10±0.70(Predicted)
PSA: 99.13000
LogP: 2.98960

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3870-07-3

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Chemical Properties

Melting Point: 266 °C

Boiling Point: 589.4 °C at 760 mmHg

Flash Point:310.3 °C

Density: 1.314 g/cm³

Solubility:Chloroform (Slightly, Sonicated), Methanol (Slightly)

Storage Temp.:Refrigerator

PKA: 13.10±0.70(Predicted)

PSA: 99.13000

LogP: 2.98960

Global suppliers and manufacturers of 3870-07-3total 109 suppliers on LookChem

Article Database

3870-07-3

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Chemical Properties

Melting Point: 266 °C

Boiling Point: 589.4 °C at 760 mmHg

Flash Point:310.3 °C

Density: 1.314 g/cm3

Solubility:Chloroform (Slightly, Sonicated), Methanol (Slightly)

Storage Temp.:Refrigerator

PKA: 13.10±0.70(Predicted)

PSA: 99.13000

LogP: 2.98960

Global suppliers and manufacturers of 3870-07-3total 109 suppliers on LookChem

Density: 1.314 g/cm³