Zobrazeno 1 - 10
of 457
pro vyhledávání: '"Osamu Muraoka"'
Autor:
Fenglin Luo, Yoshiaki Manse, Saowanee Chaipech, Yutana Pongpiriyadacha, Osamu Muraoka, Toshio Morikawa
Publikováno v:
Pharmaceuticals, Vol 16, Iss 2, p 231 (2023)
A methanol extract of the flowers of Mammea siamensis (Miq.) T. Anders. (Calophyllaceae) showed anti-proliferative activity against human prostate carcinoma LNCaP cells (IC50 = 2.0 µg/mL). Two new coumarin-related polysubstituted benzofurans, mammea
Externí odkaz:
https://doaj.org/article/b1e3370918c3498b97906b31473dd12a
Autor:
Genzoh Tanabe, Satoshi Ueda, Kazuho Kurimoto, Naoki Sonoda, Shinsuke Marumoto, Fumihiro Ishikawa, Weijia Xie, Osamu Muraoka
Publikováno v:
ACS Omega, Vol 4, Iss 4, Pp 7533-7542 (2019)
Externí odkaz:
https://doaj.org/article/250b97e8b8f7447481ffae5c986dbb67
Autor:
Toshio Morikawa, Fenglin Luo, Yoshiaki Manse, Hidemi Sugita, Shunsuke Saeki, Saowanee Chaipech, Yutana Pongpiriyadacha, Osamu Muraoka, Kiyofumi Ninomiya
Publikováno v:
Frontiers in Chemistry, Vol 8 (2020)
Geranylated coumarin constituents, kayeassamin I (1) and mammeasins E (2) and F (3) were newly isolated from the methanol extract of the flowers of Mammea siamensis (Calophyllaceae) originating in Thailand, along with five known isolates, such as mam
Externí odkaz:
https://doaj.org/article/53223d450a7040798e9070794e3ebb65
Autor:
Takashi Go, Akane Morimatsu, Hiroaki Wasada, Genzoh Tanabe, Osamu Muraoka, Yoshiharu Sawada, Mitsuhiro Yoshimatsu
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2722-2729 (2018)
A unique 1,7-S- and Se-shift reaction under Pummerer reaction conditions of 4-alkenyl-3-sulfinyl- and seleninylpyrroles was described. The usual Pummerer reaction of 4-(alkenylaminomethyl)-3-phenylsulfinylpyrroles and a successive reaction with tetra
Externí odkaz:
https://doaj.org/article/77a754f866274044ad5e9894d9a2a3a8
Autor:
Hiroaki Shimada, Yuichi Urabe, Yuhei Okamoto, Zheng Li, Atsushi Kawase, Toshio Morikawa, Pengfei Tu, Osamu Muraoka, Masahiro Iwaki
Publikováno v:
Journal of Functional Foods, Vol 39, Iss , Pp 91-95 (2017)
Echinacoside (ECH) and acteoside (ACT), the major constituents of Cistanche tubulosa, suppress the increase in postprandial blood glucose level. Although ECH and ACT have been reported to weakly inhibit α-glucosidases, the underlying mechanism remai
Externí odkaz:
https://doaj.org/article/f0974283c15b499d9c9ec4836a80de66
Autor:
Teppei Miyake, Sari Ishimoto, Naoko Ishimatsu, Keiichiro Higuchi, Katsuhiko Minoura, Takashi Kikuchi, Takeshi Yamada, Osamu Muraoka, Reiko Tanaka
Publikováno v:
Molecules, Vol 20, Iss 11, Pp 20955-20966 (2015)
Two new mexicanolide-type limonoids, carapanolides T–U (1–2), and three new phragmalin-type limonoids, carapanolides V–X (3–5), were isolated from the seeds of Carapa guianensis (andiroba). Their structures were determined on the basis of 1D-
Externí odkaz:
https://doaj.org/article/7b464e73da734a57a2479c28149b2034
Publikováno v:
Molecules, Vol 19, Iss 11, Pp 17130-17140 (2014)
A novel gedunin and two novel phragmalin-type limonoids, named carapanolides J–L (compounds 1–3) as well as a known gedunin-type limonoid 4 were isolated from the seeds of Carapa guianensis (andiroba). Their structures were determined on the basi
Externí odkaz:
https://doaj.org/article/20e5c9b850a0404baf95ea0e05abef9d
Autor:
Lu Lu, Xuemin Rao, Rigang Cong, Chenxi Zhang, Zhimei Wang, Jinyi Xu, Genzoh Tanabe, Osamu Muraoka, Xiaoming Wu, Weijia Xie
Publikováno v:
Molecules, Vol 24, Iss 3, p 583 (2019)
A group of nitrate derivatives of naturally occurring sauropunol A and B were designed and synthesized. Nitric oxide (NO) releasing capacity and vasodilatory capacity studies were performed to explore the structure-activity relationship of resulted n
Externí odkaz:
https://doaj.org/article/73653700519c4ee6994700c6b1713dad
Autor:
Yoshiaki Manse, Kiyofumi Ninomiya, Ryosuke Nishi, Yoshinori Hashimoto, Saowanee Chaipech, Osamu Muraoka, Toshio Morikawa
Publikováno v:
Molecules, Vol 22, Iss 12, p 2279 (2017)
In our continuing study of biologically active natural products from the fruit of Alpinia galanga (Zingiberaceae), we newly isolated three new labdane-type diterpenes, termed galangalditerpenes A–C (1–3), along with four known sesquiterpenes (4
Externí odkaz:
https://doaj.org/article/1088b60cb8ae484c804fa60b2f30da2f
Autor:
Toshio Morikawa, Niichiro Kitagawa, Genzoh Tanabe, Kiyofumi Ninomiya, Shuhei Okugawa, Chiaki Motai, Iyori Kamei, Masayuki Yoshikawa, I-Jung Lee, Osamu Muraoka
Publikováno v:
Molecules, Vol 21, Iss 7, p 930 (2016)
A quantitative analytical method for five aporphine alkaloids, nuciferine (1), nornuciferine (2), N-methylasimilobine (3), asimilobine (4), and pronuciferine (5), and five benzylisoquinoline alkaloids, armepavine (6), norarmepavine (7), N-methylcocla
Externí odkaz:
https://doaj.org/article/1ce6caa895744efd99d891cf2016f70d