Biological Activities and Crystal Structure Determination of trans, trans-Cyclohexane- 1,2,4,5-tetrol Monohydrate from Pseuduvaria phuyensis (R.M.K. Saunders)

Abstract

There are more than 385 species in Brazil, approximately 51 genera, and more than 950 species found in Asia and Australia, while 40 genera with about 450 species are found in Africa and Madagascar, and 30 genera with 740 species are found in the American continent. 3 In Thailand, there are about 39 genera containing approximately 300 species. 4 Traditionally, several plants of the Annonaceae family are used in folk medicine such as, Annona muricata (A .muricata) is used in the treatment of various diseases, especially cancer, and parasitic infections. Also, Annona cherimola (A .cherimola) seeds are used as an insecticide, while a decoction of Annona reticulata (A. reticulata) is used in the treatment of malaria and syphilis. The leaf of Annona squamosa (A .squamosa) are also used as vermicide, against tumors, insect bites, and skin problems. 5,6 Phytochemistry research has revealed that the plants of the Annonaceae family are rich in many types of compounds, such as; alkaloids, 7 acetogenins, 8 flavonoids, 9 and other phenolic compounds . 10 Psuduvaria phuyensis( P. phuyensis) (Figure 1) is a member of the Psuduvaria genus that belongs to the Annonaceae family. 11 P. phuyensis is a small tree ( 6 m )with pendent, unisexual flowers, the petals are in two whorls, with the larger inner whorl forming a mitriform dome above the reproductive organs. 12 Presently,