633-31-8

Usage

Chemical Properties

white powder

InChI:InChI=1/C30H50O2/c1-7-28(31)32-23-15-17-29(5)22(19-23)11-12-24-26-14-13-25(21(4)10-8-9-20(2)3)30(26,6)18-16-27(24)29/h11,20-21,23-27H,7-10,12-19H2,1-6H3/t21-,23+,24+,25-,26+,27+,29+,30-/m1/s1

Upstream product

• 6050-26-6 dipropionamide 
• 57-88-5 cholesterol 
• 910-31-6 3-chloro-cholest-5-ene 
• 802294-64-0 propionic acid 
• 910-31-6 cholesteryl chloride 
• 123-62-6 propionic acid anhydride 
• 604-35-3 Cholesteryl acetate 
• 57-88-5 cholesterol 
• 79-03-8 propionyl chloride 

Relevant academic research and scientific papers

Synthesis and characterization of side-chain cholesterol derivatives based on double bond

After steps of esterification, epoxidation and ring-opening, a series of novel monomers of 5-hydroxyl-6-methacryloyloxy-3-alkylate, CnCOOCh (n = 1, 2, 3, 4, 5) were synthesized. After that, the corresponding polymers (PnCOOCh, n = 1, 2, 3, 4, 5) were obtained by free radical polymerization. The molecular structure, composition and thermal behaviors of monomers and polymers were confirmed by 1H NMR, FTIR, single crystal diffractometer, GPC, DSC and TGA. The results indicate that although their molecular weights are not high, all the polymers have high glass transition (Tg) and degradation temperature. In addition, Tg gradually decreases with increasing of alkyl chain lengths, and the degradation temperature increases with the increase of carbon number.

Oxidation of steroidal compounds with Mn(III) acetate

Mn(III) acetate oxidation of cholest-5-ene (I) in acetic acid-acetic anhydride affords 5 ξ-hydroxycholestan-6 ξ-yl acetic acid γ-lactone (VI), 5 ξ-acetoxycholestan-6 β-ol (VII) and 6 ξ-carboxymethylenecholest-4-ene (VIII). Under similar reaction conditions 3 β-acetoxycholest-5-ene (II) gives 4 β-hydroxycholest-5-en-3β-yl acetic acid γ-lactone (IX), its 7 α-acetoxy analogue (X) and 3 β-acetoxy-5 β-hydroxycholestane-6 ξ-yl acetic acid γ-lactone (XI). The chloroolefin (III) gives X and 3 β-chloro-5 α-cholestan-6 β-ol (XII). I with Mn (III) acetate in propionic acid-propionic anhydride affords 2'-methyl-5ξ-hydroxycholestan-6ξ-yl acetic acid γ-lactone (XIII) and 2'-methyl-7α-propionoxy-4 β-hydroxycholest-5-en-3β-yl acetic acid γ-lactone (XIV). II and III give 3β-propionoxycholest-5-ene (XV), the product of nucleophilic substitution at C-3. The difference noticed in the behavior of Mn (III) acetate in acetic acid-acetic anhydride and Mn (III) acetate in propionic acid-propionic anhydride towards II and III eludes rationalization. 7-Oxocholest-5-en-3β-yl acetate (IV) when treated with Mn (III) acetate in acetic acid-acetic anhydride gives 7-oxocholesta-3,5-diene (XVI), 7-oxocholest-5-en-3β, 4α-yl diacetate (XVII) and 4β-hydroxy-7-oxocholest-5-en-3β-yl acetic acid γ-lactone (XVIII). Under similar conditions 3-oxocholest-4-ene (V) affords 3-oxocholest-4-en-6 α-yl acetate (XIX), its 6β-epimer (XX) and 3-oxocholesta-1, 4-diene (XXI). The products have been characterized on the basis of elemental analysis, spectral values and in some cases by conversions and comparison with authentic samples.

MESOMORPHISM OF CHOLESTERYL HALOPROPIONATE.

Mesomprphisms of several cholesteryl monohalopropionates have been studied. The beta -monohalopropionates exhibited a cholesteric liquid crystal phase, but the alpha -monohalopropionates had no mesophase. These results were explained by the lateral dimensions of rigid lathlike cholesteryl compounds.