Research progress on structures,activities,and biosynthesis of blazeispirol compounds from Agaricus blazei
Agaricus blazei is a rare medicinal and edible fungus with a crispy taste and delicious flavor.Both fruiting body and my-celium are rich in polysaccharides,sterols,terpenoids,peptides,lipids,polyphenols,and other active ingredients,which have strong pharmacological activities such as anti-tumor,lipid-lowering,glucose-lowering,immunomodulation,optimization of intestinal flora,and anti-oxidation.Therefore,it is a kind of fungal resource with a great prospect of edible and medicinal development.Among the re-ported chemical components of A.blazei,blazeispirol is a series of sterol compounds unique to A.blazei,which has a spiral structure and is different from classical steroids.It is an important active ingredient found in the mycelium of A.blazei and has significant hepa-toprotective activity.It can be used as a phylogenetic and chemotaxonomic marker of A.blazei strains and is considered an excellent lead compound for drug development.According to the skeleton structure characteristics,the 17 discovered blazeispirol compounds can be divided into two types:blazeispirane and problazeispirane.In order to further explore the resource of blazeispirol compounds of A.blazei,the discovery,isolation,structure,biological activity,and biosynthetic pathways of blazeispirol compounds of A.blazei were systematically reviewed.Besides,the metabolic regulation strategies related to the fermentation synthesis of blazeispirol A by A.blazei were discussed.This review could provide a reference for the efficient synthesis and development of blazeispirol compounds,the re-search and development of related drugs and functional foods,and the quality improvement of A.blazei and other medicinal and edible fungi resources and derivatives.
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