Search Results - "Akai, Shoji"

Thiol-responsive pro-fluorophore labeling: Synthesis of a pro-fluorescent labeled oligonucleotide for monitoring cellular uptake by Saneyoshi, Hisao, Yamamoto, Yuta, Ohta, Takayuki, Akai, Shoji, Ono, Akira

“…[Display omitted] Pro-fluorescent labeled oligonucleotides are potential alternative tools to classical fluorescently labeled oligonucleotides for monitoring…”
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Formation of thioglucoside single crystals by coherent molecular vibrational excitation using a 10-fs laser pulse by Iwakura, Izumi, Komori-Orisaku, Keiko, Hashimoto, Sena, Akai, Shoji, Kimura, Kenta, Yabushita, Atsushi

“…Compound crystallization is typically achieved from supersaturated solutions over time, through melting, or via sublimation. Here a new method to generate a…”
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Stereoselective and Efficient Total Synthesis of Optically Active Tetrodotoxin from d-Glucose by Sato, Ken-ichi, Akai, Shoji, Shoji, Hirotsugu, Sugita, Naoki, Yoshida, Shiho, Nagai, Yoshinao, Suzuki, Katsuhiko, Nakamura, Yutaka, Kajihara, Yasuhiro, Funabashi, Masuo, Yoshimura, Juji

“…A stereoselective and efficient total synthesis of optically active tetrodotoxin (TTX) is described. A polyfunctionalized key cyclitol compound containing…”
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Total Synthesis of (−)-Tetrodotoxin from D-Glucose: A New Route to Multi-Functionalized Cyclitol Employing the Ferrier(II) Reaction toward (−)-Tetrodotoxin by Akai, Shoji, Seki, Hidehito, Sugita, Naoki, Kogure, Tomokazu, Nishizawa, Naoki, Suzuki, Katsuhiko, Nakamura, Yutaka, Kajihara, Yasuhiro, Yoshimura, Juji, Sato, Ken-ichi

“…Total synthesis of (−)-tetrodotoxin (TTX) from D-glucose is described. As a critical transformation step for synthesizing TTX, a key multi-functionalized…”
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Total synthesis of cucurbitoside-like phenolic glycosides by double fluorous and acyl mixture synthesis by Kojima, Masaru, Nakamura, Yutaka, Komori, Kazuki, Akai, Shoji, Sato, Ken-ichi, Takeuchi, Seiji

“…The first and simultaneous total syntheses of cucurbitosides A, B, G, and I, seguinosides C and D, and two unnatural analogs were achieved using the technique…”
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A Concise Total Synthesis of (+)-Pancratistatin from D-Glucose Featuring the Henry Reaction by Akai, Shoji, Kojima, Masaru, Yamauchi, Shunsuke, Kohji, Takahiro, Nakamura, Yutaka, Sato, Ken-ichi

“…Sugar, oh Henry, Henry: A concise and stereoselective synthesis of (+)‐pancratistatin is described. The key nitrocyclitol compound was prepared from a…”
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Synthesis of the starfish ganglioside LLG-3 tetrasaccharide by Hanashima, Shinya, Ishikawa, Daichi, Akai, Shoji, Sato, Ken-ichi

“…The first synthesis of the ganglioside LLG-3 tetrasaccharide, which has attractive biological activities as well as a unique structure, is described. A…”
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Sialylation using N-glycolylneuraminyl phosphite donors to synthesize Neu5Gc-containing glycans by Hanashima, Shinya, Tomiya, Taku, Ishikawa, Daichi, Akai, Shoji, Sato, Ken-ichi

“…Efficient sialylations using N-glycolylneuraminic acid (Neu5Gc) phosphite donors having an acetyl or benzyl group on the glycolyl moiety are described in the…”
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Convenient construction of a variety of glycosidic linkages using a universal glucosyl donor by Sato, Ken-ichi, Akai, Shoji, Sakai, Koudai, Kojima, Masaru, Murakami, Hideshige, Idoji, Tetsuya

“…This letter deals with the concept of constructing four types ( cis-α, trans-α, cis-β, and trans-β) of glycosidic linkages using a universal glucosyl donor…”
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Practical synthesis of [1- 13C]- and [6- 13C]- d-galactose by Sato, Ken-ichi, Akai, Shoji, Sakuma, Mayumi, Kojima, Masaru, Suzuki, Ken-ju

“…The chemical synthesis of 13C-labeled d-galactose as useful molecular probes for studying the conformation of oligosaccharides attached to proteins was…”
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Selective Deprotection Method of N‑Phenylcarbamoyl Group by Akai, Shoji, Tanaka, Rika, Hoshi, Hidekazu, Sato, Ken-ichi

“…We report an improved method for the selective deprotection of the N-phenylcarbamoyl group, which yields the corresponding alcohol without affecting other…”
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Thioester-assisted α-sialylation reaction by Hanashima, Shinya, Akai, Shoji, Sato, Ken-ichi

“…α-Selective sialylation reactions using novel sialic acid building blocks carrying thioester type auxillary was described. α-Selective sialylation reactions…”
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Stereocontrolled total synthesis of tetrodotoxin from myo-inositol and D-glucose by three routes: aspects for constructing complex multi-functionalized cyclitols with branched-chain structures by Sato, Ken-ichi, Akai, Shoji, Yoshimura, Juji

“…This report describes the stereocontrolled total synthesis of the multi-functionalized cyclitol derivative, tetrodotoxin, containing eight asymmetric carbons…”
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Crystal Structure of Potential Key Compounds, DL -(1,2,3′,4,5,6′/3,6)-6-Azido-5′-O-t-butyldiphenylsilyl-6-(cyano)hydroxymethyl-3,5-di-C-hydroxymethyl-1,2:3,3′-di-O-isopropylidene-4-O-methoxymethyl-1,2,3,4-cyclohexanetetrol, toward (±)-Tetrodotoxin by AKAI, Shoji, SUGITA, Naoki, YOSHIMURA, Juji, SATO, Ken-ichi

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Crystal Structure of (1R,2R,3S,4S,5S,6S,7R,9S)-6-Azido-7-cyano-3-C-hydroxy-methyl-3,3′-di-O-isopropylidene-9-methoxy-2,4,5-tris(O-methoxymethyl)-2,3,4,5-tetrahydroxy-8-oxabicyclo[4.3.0]nonane, toward Tetrodotoxin by AKAI, Shoji, NAKAMURA, Yutaka, KAJIHARA, Yasuhiro, YOSHIMURA, Juji, SATO, Ken-ichi

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Stereocontrolled total synthesis of tetrodotoxin from myo-inositol and D-glucose by three routes: aspects for constructing complex multi-functionalized cyclitols with branched-chain structures by Sato, Ken-ichi, Akai, Shoji, Yoshimura, Juji

“…This report describes the stereocontrolled total synthesis of the multi-functionalized cyclitol derivative, tetrodotoxin, containing eight asymmetric carbons…”
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Total syntheses of (+)- and (−)-1,3,4,5-tetragalloylapiitol and revision of absolute configuration of naturally occurring (−)-1,3,4,5-tetragalloylapiitol by Kojima, Masaru, Nakamura, Yutaka, Akai, Shoji, Sato, Ken-ichi, Takeuchi, Seiji

“…The total syntheses of (+)- and (−)-1,3,4,5-tetragalloylapiitol were achieved in seven steps from d- and l-ribose, respectively. By comparing the optical…”
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Novel and Stereocontrolled Synthesis of (±)-Tetrodotoxin from myo-Inositol by SATO, Ken-ichi, AKAI, Shoji, SUGITA, Naoki, OHSAWA, Tadatsugu, KOGURE, Tomokazu, SHOJI, Hirotsugu, YOSHIMURA, Juji

“…[reactions: see text] The novel and stereocontrolled synthesis of (+/-)-tetrodotoxin from myo-inositol is described. The key steps involve the stepwise…”
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Tetrabutylammonium nitrite - acetic anhydride system, tetrabutylammonium nitrite, tetrabutylammonium acetate, and cesium acetate - 18-crown-6 for efficient unmasking of alkyl N-phenylcarbamates by Akai, Shoji, Nishino, Noriaki, Iwata, Yukihiro, Hiyama, Jun-ichi, Kawashima, Etsuko, Sato, Ken-ichi, Ishido, Yoshiharu

“…Novel unmasking procedures for alkyl N-phenylcarbamates are established by the use of a tetrabutylammonium nitrite (Bu 4NNO 2) - acetic anhydride system, Bu…”
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Scope and Limitations of a Modified Hantzsch Reaction for the Synthesis of Oxazole-Dehydroamino Acid Derivatives from Dehydroamino Acid Amides by Akai, Shoji, Sato, Ken-ichi, Nagaya, Akihiro, Yamagishi, Yoji, Yonezawa, Yasuchika, Shin, Chung-gi

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