312261-65-7Relevant academic research and scientific papers
Medicinal flowers. XXXI. Acylated oleanane-type triterpene saponins, sasanquasaponins I-V, with antiallergic activity from the flower buds of Camellia sasanqua
Matsuda, Hisashi,Nakamura, Seikou,Fujimoto, Katsuyoshi,Moriuchi, Ryo,Kimura, Yuta,Ikoma, Noriko,Hata, Yuki,Muraoka, Osamu,Yoshikawa, Masayuki
, p. 1617 - 1621 (2010)
The methanolic extract and its 1-butanol-soluble fraction from the flower buds of Camellia sasanqua THUNB. were found to show inhibitory activities on the release of β-hexosaminidase from rat basophile leukemia (RBL-2H3) cells. From the 1-butanol-soluble
Medicinal flowers. XXXV. Nor-oleanane-type and acylated oleanane-type triterpene saponins from the flower buds of Chinese Camellia japonica and their inhibitory effects on melanogenesis
Fujimoto, Katsuyoshi,Nakamura, Seikou,Nakashima, Souichi,Matsumoto, Takahiro,Uno, Kaoru,Ohta, Tomoe,Miura, Tomoko,Matsuda, Hisashi,Yoshikawa, Masayuki
, p. 1188 - 1194,7 (2020/08/31)
The methanolic extract and its 1-butanol-soluble fraction from the flower buds of Camellia japonica, cultivated in Yunnan Province, China, showed inhibitory effects on melanogenesis in theophylline-stimulated B16 melanoma 4A5 cells. From the 1-butanol-soluble fraction, a new 28-nor-oleanane-type and three new oleanane-type triterpene saponins, sanchakasaponins A-D, were isolated together with four known triterpene saponins. Their chemical structures were elucidated on the basis of chemical and physicochemical evidence. The inhibitory effects on melanogenesis in theophylline-stimulated B16 melanoma 4A5 cells and structure-activity relationships of the saponins were investigated.
Medicinal flowers. XXXVI.1) Acylated oleanane-type triterpene saponins with inhibitory effects on melanogenesis from the flower buds of Chinese Camellia japonica
Nakamura, Seikou,Fujimoto, Katsuyoshi,Nakashima, Souichi,Matsumoto, Takahiro,Miura, Tomoko,Uno, Kaoru,Matsuda, Hisashi,Yoshikawa, Masayuki
experimental part, p. 752 - 758 (2012/09/25)
Four acylated oleanane-type triterpene oligoglycosides, sanchakasaponins E-H, were isolated from the flower buds of Camellia japonica cultivated in Yunnan province, China, together with four known triterpene oligoglycosides. The chemical structures of the new triterpene oligoglycosides were elucidated on the basis of chemical and physicochemical evidence. The inhibitory effects of the triterpene oligoglycoside constituents on melanogenesis in theophylline-stimulated B16 melanoma 4A5 cells were investigated.
Medicinal flowers. XXX. Eight new glycosides, everlastosides F - M, from the flowers of Helichrysum arenarium
Morikawa, Toshio,Wang, Li-Bo,Ninomiya, Kiyofumi,Nakamura, Seikou,Matsuda, Hisashi,Muraoka, Osamu,Wu, Li-Jun,Yoshikawa, Masayuki
experimental part, p. 853 - 859 (2010/03/26)
Eight new glycosides, everlastosides F (1), G (2), H (3), I (4), J (5), K (6), L (7), and M (8), were isolated from the methanolic extract of the flowers of Helichrysum arenarium. Their structures were elucidated on the basis of chemical and physicochemic
