28610-35-7

Upstream product

• 28610-34-6 6,6-dimethyldihydropyran (2,3:7,8)-5,4'-dihydroxyflavonol 
• 108-24-7 acetic anhydride 
• 641-94-1 amurensin 
• 90-24-4 2-hydroxy-4,6-dimethoxyacetophenone 
• 83171-42-0 4,6-dimethoxy-2-(4'-methoxybenzoyloxy)acetophenone 

Downstream Products

• 38226-86-7 3,5-dihydroxy-2-(4-methoxyphenyl)-8,8-dimethyl-9,10-dihydro-8H-pyrano[2,3-f]chromen-4-one 

Relevant academic research and scientific papers

A 2,2-DIMETHYLPYRANOFLAVONOL FROM CITRUS NOBILIS

An investigation of the root bark constituents of Citrus nobilis var. sunki has afforded a sesquiterpene , six coumarins , and four acridone alkaloids together with p-hidroquinone.A new 2,2-dimethylpyranoflavonol was also isolated, identified and named citrusinol. Key Word Index - Citrus nobilis var. sunki; Rutaceae; citrusinol; flavonoids; coumarins; sesquiterpene; acridone alkaloids; homoacridone alkaloids.

Method for preparing dewatered icaritin through total-synthesis

The invention provides a method for preparing dewatered icaritin through total-synthesis. The method includes the steps of connecting an isopentene group to 8th-position carbon through ortho-positionrearrangement with methoxybenzoyl chloride, isoprenyl bromide and the like as the raw materials by means of trihydroxyacetophenone, and conducting the forming series reaction of a flavone framework toobtain the dewatered icaritin. The defects that in a traditional method of introducing an isopentene group, the yield is low, catalysts are expensive and lots of byproducts are produced are overcome,and the method is low in cost, simple in operation, good in yield and suitable for industrial production.