Publications by authors named "Sentaro Okamoto"

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Indole-3-Butyric Acid (IBA) Derivatives for Root Architecture Modulation: Potent Promoters via Conversion to IBA and Selective Inhibitors for Lateral Root Formation.
Rie Kikuchi, Takeshi Yamada, Ami Watanabe, Koyo Shibasaki, Kazuki Arai, Sentaro Okamoto

ACS Omega· September 2025

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Design, synthesis, and properties of des-D-ring interphenylene derivatives of 1α,25-Dihydroxyvitamin D.
Kouta Ibe, Haruki Nakada, Mayu Ohgami, Takeshi Yamada, Sentaro Okamoto

Eur J Med Chem· December 2022

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Organocatalytic multicomponent coupling to access a highly functionalised tetracyclic furoindoline: interrupted Passerini/Joullié-Ugi cascade reaction.
Takeshi Yamada, Sentaro Okamoto

Chem Commun (Camb)· October 2022

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Deuteration of Indole Compounds: Synthesis of Deuterated Auxins, Indole-3-acetic Acid-d5 and Indole-3-butyric Acid-d5.
Takeshi Yamada, Kazuki Arai, Rie Kikuchi, Sentaro Okamoto

ACS Omega· August 2021

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6-Halo-2-pyridone as an efficient organocatalyst for ester aminolysis.
Takeshi Yamada, Yusuke Watanabe, Sentaro Okamoto

RSC Adv· July 2021

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Synthesis and vitamin D receptor affinity of 16-oxa vitamin D analogues.
Kouta Ibe, Takeshi Yamada, Sentaro Okamoto

Org Biomol Chem· December 2019

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Synthetic Reactions Using Low-valent Titanium Reagents Derived from Ti(OR)4 or CpTiX3 (X = O-i-Pr or Cl) in the Presence of Me3SiCl and Mg.
Sentaro Okamoto

Chem Rec· April 2016

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Iron-catalyzed reductive magnesiation of oxetanes to generate (3-oxidopropyl)magnesium reagents.
Yu-ki Sugiyama, Shiori Heigozono, Sentaro Okamoto

Org Lett· December 2014

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Cobalt-catalyzed cross addition of silylacetylenes to internal alkynes.
Tetsuya Sakurada, Yu-ki Sugiyama, Sentaro Okamoto

J Org Chem· April 2013

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Synthesis and catalytic properties of 4-aryl-2,3-dihydro-4H-pyrimido[2,3-b]benzothiazoles for asymmetric acyl or carboxyl group transfer reactions.
Baby Viswambharan, Tatsuya Okimura, Satoko Suzuki, Sentaro Okamoto

J Org Chem· August 2011

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Non-Cp titanium alkoxide-based homolytic ring-opening of epoxides by an intramolecular hydrogen abstraction in β-titanoxy radical intermediates.
Tsuyoshi Kawaji, Noriaki Shohji, Kenji Miyashita, Sentaro Okamoto

Chem Commun (Camb)· July 2011

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Chain-growth cycloaddition polymerization via a catalytic alkyne [2 + 2 + 2] cyclotrimerization reaction and its application to one-shot spontaneous block copolymerization.
Yu-ki Sugiyama, Rei Kato, Tetsuya Sakurada, Sentaro Okamoto

J Am Chem Soc· June 2011

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Ti(O-i-Pr)4/Me3SiCl/Mg-mediated reductive cleavage of sulfonamides and sulfonates to amines and alcohols.
Noriaki Shohji, Tsuyoshi Kawaji, Sentaro Okamoto

Org Lett· May 2011

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Selective dimerization of 1,6-diynes catalyzed by ionic liquid-supported nickel complexes in an ionic liquid/toluene biphasic system.
Avijit Goswami, Taichi Ito, Naoko Saino, Kouki Kase, Chikashi Matsuno, Sentaro Okamoto

Chem Commun (Camb)· January 2009

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On-demand generation of an efficient catalyst for pyridine formation from unactivated nitriles and alpha,omega-diynes using CoCl2-6H2O, dppe, and Zn.
Kouki Kase, Avijit Goswami, Kazuhiko Ohtaki, Emi Tanabe, Naoko Saino, Sentaro Okamoto

Org Lett· March 2007

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Selective cleavage of allyl and propargyl ethers to alcohols catalyzed by Ti(O-i-Pr)4/MXn/Mg.
Mutsumi Ohkubo, Sayaka Mochizuki, Takeshi Sano, Yuuki Kawaguchi, Sentaro Okamoto

Org Lett· March 2007

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A highly practical instant catalyst for cyclotrimerization of alkynes to substituted benzenes.
Naoko Saino, Fumihiro Amemiya, Emi Tanabe, Kouki Kase, Sentaro Okamoto

Org Lett· March 2006

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Intramolecular cyclotrimerization of triynes catalyzed by N-heterocyclic carbene-CoCl2/Zn or -FeCl3/Zn.
Naoko Saino, Daisuke Kogure, Sentaro Okamoto

Org Lett· July 2005

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New convergent synthesis of 1alpha,25-dihydroxyvitamin D3 and its analogues by Suzuki-Miyaura coupling between A-ring and C,D-ring parts.
Takeshi Hanazawa, Akiko Koyama, Kunio Nakata, Sentaro Okamoto, Fumie Sato

J Org Chem· December 2003

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Asymmetric synthesis of allyl- and alpha-allenylamines from chiral imines and alkynes via (eta(2)-imine)Ti(O-i-Pr)2 complexes.
Kohki Fukuhara, Sentaro Okamoto, Fumie Sato

Org Lett· June 2003

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Efficient convergent synthesis of 1alpha,25-dihydroxyvitamin D3 and its analogues by Suzuki-Miyaura coupling.
Takeshi Hanazawa, Akiko Koyama, Takeshi Wada, Eiko Morishige, Sentaro Okamoto

Org Lett· February 2003

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Development of new chiral building blocks for synthesis of bicyclo[3.3.0]octane compounds.
Kandasamy Subburaj, Sentaro Okamoto, Fumie Sato

J Org Chem· February 2002

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Intramolecular Nucleophilic Acyl Substitution Reaction of 3,4-Alkadienyl Carbonates Mediated by Ti(O-i-Pr)(4)/2 i-PrMgCl Reagent. Efficient Synthesis of Optically Active beta,gamma-Unsaturated Esters with an alpha-Substituent.
Yukio Yoshida, Sentaro Okamoto, Fumie Sato

J Org Chem· November 1996

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