28487-73-2

Upstream product

• 15988-11-1 4-Phenylurazole 
• 5035-30-3 (3β,22E)-ergosta-5,7,22-trien-3-ol benzoate 

Downstream Products

• 57-87-4 Ergosterol 
• 104729-37-5 benzyloxy-3β (phenyl-4' urazolo-1',2')-5α,8α bis-nor-23,24-cholene-6 ol-22 
• 104729-36-4 3β-hydroxy-23,24-bisnorchola-5,7-dien-22-yl phenyl sulfone 
• 87530-80-1 (p-nitrophenyl-4' urazolo-1',2')-5α,8α ergostadiene-6,22 ol-3β 
• 104729-38-6 (p-nitrophenyl-4' urazolo-1',2')-5α,8α bis-nor-23,24-cholene-6 diol-3β,22 
• 104729-42-2 C₃₇H₄₂IN₃O₄ 
• 104729-35-3 benzyloxy-3β phenylsulfonyl-22 (phenyl-4' urazolo-1',2')-5α,8α bis-nor-23,24-cholene-6 
• 104729-34-2 trifluoroacetoxy-3β (p-nitrophenyl-4' urazolo-1',2')-5α,8α ergostadiene-6,22 
• 104729-41-1 C₄₄H₄₉N₃O₇S 
• 10123-90-7 3β-hydroxy-3',5'-dioxo-4'-phenyl-5,8<1',2'>-1',2',4'-triazolidino-5α,8α-ergosta-6,22-diene 
• 64110-75-4 1(10->6)abeo-ergosta-5,7,9,22-tetraen-3β-yl benzoate 

Relevant academic research and scientific papers

IMPROVED SYNTHESIS OF 1,2,4-TRIAZOLINE-3,5-DIONE DERIVATIVES OF ERGOSTEROL AND A NEW METHOD FOR THEIR RECONVERSION TO ERGOSTEROL

The ergosterol diene system reacts in excellent yield with a series of 4-substituted 1,2,4-triazoline-3,5-diones generated by in situ oxidation of the appropriate hydrazides with phenylseleninic anhydride or phenylseleninic acid.Diaryltelluroxide and diphenylselenoxide are also efficient oxidants.The diene system can be smoothly regenerated by alkaline hydrolysis.

A convenient methodology for the in situ oxidation of 4-substituted urazoles. Setting UP a one-pot procedure for the efficient protection of dienes

The oxidation of 4-substituted urazoles to the corresponding 1,2,4-triazoline-3,5-diones can be performed selectively in the presence of dienic systems by the action of the nitrosonium ion, formed in situ by stoichiometric amounts of sodium nitrite and ac