Zobrazeno 1 - 10 of 14 pro vyhledávání: '"Naohisa Ishida"'
1
Synthesis of C2-symmetric chiral crown ethers by lipase-catalyzed reactions
Autor: Yohji Nakatsuji, Naohisa Ishida, Takuya Taniguchi, Misako Nakamura, Masahiro Muraoka, Keishi Hayashi
Publikováno v: Tetrahedron. 67:9298-9304
Kinetic resolution of a racemic mixture of C 2 -symmetric 18-crown-6 diols ( rac - 1a ) and 15-crown-5 diol ( rac - 1c ) was achieved by lipase-catalyzed acetylation. The enantiomeric excess of the chiral crown diols (95% ee and 82% ee) was determine
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fbea8d568f65355716ab880bfc9f168d
https://doi.org/10.1016/j.tet.2011.09.119
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2
Facile Synthesis of C2-Symmetric Chiral Crown Ethers with Two Reactive Hydroxymethyl Groups
Autor: Katsumori Nagamiya, Yuki Itoh, Yoshio Nakahara, Yohji Nakatsuji, Mitsuru Akashi, Toshiyuki Kida, Naohisa Ishida, Masahiro Muraoka, Kentaro Uesugi
Publikováno v: Synthesis. 2007:2973-2978
Two C2-symmetric chiral crown ethers, (2 S,12 S)-2,12-bis(hydroxymethyl)-2,12-dimethyl-18-crown-6 and (2 R,9 R)-2,9-bis(hydroxymethyl)-2,9-dimethyl-18-crown-6 were synthesized from a chiral subunit, [(4 S)-2,2,4-trimethyl-1,3-dioxolane-4-yl]methanol,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0edf7525823b57078c0f28bd9440cede
https://doi.org/10.1055/s-2007-983892
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3
Viability of Cryopreserved and Vitrified Embryos and Fertility after Direct Transfer in Ewes
Autor: Kumiko Yoshii, Yutaka Fukui, Naohisa Ishida, Sachiko Wachi, Morihiko Togawa, Aki Okada, Yasutomo Mizuochi, Masatsugu Asada, Sachio Joujou, Toshio Andoh
Publikováno v: Journal of Reproduction and Development. 48:189-195
The present study investigated the in vitro viability of cryopreserved-thawed ovine embryos by three methods, slow freezing (ethylene glycol (EG)-3 step method), freezing for direct transfer (Direct method) and vitrification (Experiment 1), and the i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f35ba418a34631893d734a9a26d02f63
https://doi.org/10.1262/jrd.48.189
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4
Effects of Dosage and Treatment Phase of Two GnRH Analogues at the Estrous Stage on Superovulation in Ewes
Autor: Kumiko Yoshii, Yasutomo Mizuochi, Aki Okada, Naohisa Ishida, Toshio Andoh, Yutaka Fukui
Publikováno v: Journal of Reproduction and Development. 47:275-281
This study investigated two different GnRH analogues (fertirelin acetate or buserelin acetate) with two different dosages (Experiment 1: spring) and different injection times at estrus in superovulated ewes (Experiment 2: autumn). Effects on ovarian
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8a5a7c49a8793e0d584506d262b45861
https://doi.org/10.1262/jrd.47.275
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5
Effect of Different hCG Treatments on Fertility of Estrus-Induced and Artificially Inseminated Ewes During the Non-Breeding Season
Autor: Yutaka Fukui, Naohisa Ishida, Ryoko Itagaki, Midori Okada
Publikováno v: Journal of Reproduction and Development. 47:189-195
The present study was conducted to determine the effect of two human chorionic gonadotropin (hCG) treatments on the fertility of ewes which were estrus-induced and artificially inseminated during the non-breeding season. Suffolk (SF: n=68) and South-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34ecc5d29b84d321c56a0b68f659bb8e
https://doi.org/10.1262/jrd.47.189
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6
Comparison of Fertility of Estrous Synchronized Ewes with Four Different Intravaginal Devices during the Breeding Season
Autor: Ryoko Itagaki, Yutaka Fukui, Midori Okada, Tomoe Ogiso, Daisuke Ishikawa, Naohisa Ishida
Publikováno v: Journal of Reproduction and Development. 45:337-343
Comparative studies of four different intravaginal devices containing progesterone or synthetic progestogens on estrous incidence, LH surge and fertility of synchronized ewes by an intrauterine insemination with frozen semen by laparoscopy were condu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e50396d7b077d8e3de18da633d71281d
https://doi.org/10.1262/jrd.45.337
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8
Non-Surgical Transfer of Fresh or Frozen-Thawed Ovine Embryos by Laparoscopy
Autor: Ryoko Itagaki, Daisuke Ishikawa, Midori Okada, Yeon Gil Jung, Naohisa Ishida, Tomoe Ogiso, Yutaka Fukui
Publikováno v: Journal of Reproduction and Development. 45:289-293
The present study was conducted to examine survival of fresh and frozen-thawed ovine embryos after embryo transfer (ET) using laparoscopy or in vitro culture. Embryos were collected on Day 7.5 (Day 0 =sponge removal) from donor ewes superovulated by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7118bc967a7c2c8f18dd47665fd1c008
https://doi.org/10.1262/jrd.45.289
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10
A Simple Superovulation Method of A Single Injection of Follicle-Stimulating Hormone Combined with Equine Chorionic Gonadotropin for Superovulation of Suffolk Ewes During the Breeding Season: I. Effects of Different Treatments on the Endocrine Profiles
Autor: Hiroko Watanabe, Akio Miyamoto, Yutaka Fukui, Midori Okada, Naohisa Ishida, Hidenori Kimura
Publikováno v: Journal of Reproduction and Development. 44:169-176
Two trials were conducted to investigate a simple superovulation method for Suffolk ewes during the breeding season. The method involves a single injection of porcine follicle-stimulating hormone (pFSH) combined with equine chorionic gonadotropin (eC
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4b547253840030a9c4257bbd81ede9a
https://doi.org/10.1262/jrd.44.169
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