Acylated oleanane-type triterpene oligoglycosides from the flower buds of Camellia sinensis var. assamica

  title={Acylated oleanane-type triterpene oligoglycosides from the flower buds of Camellia sinensis var. assamica},
  author={Tomoe Ohta and Seikou Nakamura and Souichi Nakashima and Takahiro Matsumoto and Keiko Ogawa and Katsuyoshi Fujimoto and Masashi Fukaya and Masayuki Yoshikawa and Hisashi Matsuda},
Chemical Structure of an Acylated Oleanane-type Triterpene Oligoglycoside and Anti-inflammatory Constituents from the Flower Buds of Camellia sinensis
A new acylated oleanane-type triterpene oligoglycoside, floratheasaponin K (1), was isolated together with 11 known compounds including floratheasaponins D (2)–G (5), and I (6), chakasaponin V (7),
Chemical structures of constituents from the whole plant of Bacopa monniera
In the present study, bacomosaponins A and B with acyl groups were obtained from the whole plant of B. monniera and significantly inhibited the aggregation of 42-mer amyloid β-protein.
γ-Lactam alkaloids from the flower buds of daylily
Four new alkaloids, hemerocallisamines IV–VII, were isolated from the methanol extract of flower buds of daylily and significantly inhibited the aggregation of Aβ42 in vitro.
Structures of Aromatic Glycosides from the Seeds of Cassia auriculata.
Four new constituents of cassiaglycoside were isolated from the seeds of Cassia auriculata and the chemical structures were characterized on the basis of chemical and physicochemical evidence.
New biofunctional effects of the flower buds of Camellia sinensis and its bioactive acylated oleanane-type triterpene oligoglycosides
The biofunctional effects of the flower buds of Camelliasinensis and C. sinensis var.
Triterpenoid saponins from the genus Camellia: structures, biological activities, and molecular simulation for structure-activity relationship.
Molecular simulations of the interaction between several known cytotoxic oleiferasaponin monomers and Interleukin-6 are discussed, demonstrating that molecular modeling is a convenient method to obtain structure-activity information.


Medicinal flowers. XIV. New acylated oleanane-type triterpene oligoglycosides with antiallergic activity from flower buds of chinese tea plant (Camellia sinensis).
The principal constituents, floratheasaponins A-F, were found to show the inhibitory activity on the release of beta-hexosaminidase from RBL-2H3 cells.
Medicinal Flowers. XXVI. structures of acylated oleanane-type triterpene oligoglycosides, yuchasaponins A, B, C, and D, from the flower buds of Camellia oleifera-gastroprotective, aldose reductase inhibitory, and radical scavenging effects-.
The methanolic extract and its 1-butanol-soluble fraction from the flower buds of Camellia oleifera ABEL were found to exhibit inhibitory effects on ethanol- and indomethacin-induced gastric mucosal lesions in rats and their gastroprotective effects were examined.
Acylated Oleanane‐Type Triterpene Saponins with Acceleration of Gastrointestinal Transit and Inhibitory Effect on Pancreatic Lipase from Flower Buds of Chinese Tea Plant (Camellia sinensis)
The MeOH extract and its BuOH-soluble fraction (crude saponin fraction) from the flower buds of Chinese tea plant were found to exhibit accelerating effects on gastrointestinal transit in mice and inhibitory effects against pancreatic lipase.
Structures of acylated sucroses and an acylated flavonol glycoside and inhibitory effects of constituents on aldose reductase from the flower buds of Prunus mume
Several flavonol glycosides including mumeflavonoside A were shown to inhibit aldose reductase, and the chemical structures of the new compounds were elucidated on the basis of chemical and physicochemical evidence.
Saponin and Sapogenol. VI. Sapogenol Constituents of Leaves of Pittosporum tobira AIT.
The sapogenol constituents of leaves of Pittosporum tobira AIT. (Pittosporaceae) have been examined. On the basis of chemical and physicochemical evidences, three sapogenols obtained by acid
Structure of diarylheptanoids with antiallergic activity from the rhizomes of Curcuma comosa
The methanolic extract from the dried rhizomes of Curcuma comosa cultivated in Thailand was found to inhibit the release of β-hexosaminidase as a maker of degranulation from rat basophil leukemia
Saponin and Sapogenol. I. Seeds Sapogenols of Thea sinensis L. (1). Barringtogenol C (=Theasapogenol B)
The structure of theasapogenol B, one of seeds sapogenols of Thea sinensis L. (Theaceae) has been established as 3β, 16α, 21β, 22α, 28-pentahydroxy-olean-12-ene (II). Based on the identity of
Lignan dicarboxylates and terpenoids from the flower buds of Cananga odorata and their inhibitory effects on melanogenesis.
These isolated terpenoid derivatives may be promising therapeutic agents for the treatment of several skin disorders after showing an inhibitory effect on melanogenesis in theophylline-stimulated murine B16 melanoma 4A5 cells.