Information on the diversity of the composition of terpenoids, phenolic compounds (phenylpropanoids, lignans, flavonoids) and other groups of secondary metabolites of Crataegus pinnatifida, published in the world literature over the past decades, is presented. Structural formulas are also indicated for new components isolated from C. pinnatifida. Among the new terpenoids of the leaves, fruits, and seeds of C. pinnatifida, mono- and sesquiterpenic glycosides (shanyesides, pinnatifidanosides, etc.), as well as triterpenic acids of the oleanan series, predominate. Among the phenolic compounds in the leaves and seeds, new biphenyl glycosides (shanyenosides), derivatives of cinnamaldehyde (crataegusoids), crataegusanoids and other phenylpropanoids were found. The most diverse in various parts of C. pinnatifida, especially in the seeds, are lignans of various types of structure, in particular sesquilignan glycosides, as well as new lignans (pinnatifidanins, pinnatifidaninsides, neolignans of the dibenzofuran series and other substances). In addition to these groups, new flavonoids, flavanocoumarins, and naphthoquinones were found in leaves, flowers, fruits, and seeds. The results of pharmacological studies showing the presence of cytotoxic, anti-inflammatory, antioxidant, antidiabetic, hypocholesterolemic, thrombolytic, neuroprotective, antibacterial and other types of biological activity found in extracts, their fractions, as well as individual compounds of various organs and parts of C. pinnatifida are presented.
