Masaji Ohno

Overview

Best Publications

• Stereocontrolled synthesis of (+)-negamycin from an acyclic homoallylamine by 1,3-asymmetric induction

  Yi Fong Wang;Toshio Izawa;Susumu Kobayashi;Masaji Ohno

  394
  Citations

• A catalytic enantioselective reaction using a C2-symmetric disulfonamide as a chiral ligand: Alkylation of aldehydes catalyzed by disulfonamide-Ti(O-i-Pr)4-Dialkyl zinc system

  Hideyo Takahashi;Takashi Kawakita;Masaji Ohno;Masato Yoshioka

  365
  Citations

• Asymmetric induction catalyzed by conjugate bases of chiral proton acids as ligands: Enantioselective addition of dialkylzinc-orthotitanate complex to benzaldehyde with catalytic ability of a remarkable high order

  Masato Yoshioka;Takashi Kawakita;Masaji Ohno

  278
  Citations

• Enantioselective synthesis of the carbocyclic nucleosides (-)-aristeromycin and (-)-neplanocin A by a chemicoenzymatic approach

  Masafumi Arita;Kunitomo Adachi;Yukishige Ito;Hiroaki Sawai

  244
  Citations

• Enantioselective alkylation of aldehyde catalyzed by disulfonamide-Ti(O-i-Pr)4-dialkyl zinc system

  Hideyo Takahashi;Takashi Kawakita;Masato Yoshioka;Susumu Kobayashi

  214
  Citations

• Total Synthesis of Longifolene

  E. J. Corey;Masaji. Ohno;Rajat B. Mitra;Paul A. Vatakencherry

  203
  Citations

• Ph3P-(PyS)2-CH3CN as an excellent condensing system for .beta.-lactam formation from .beta.-amino acids

  Susumu Kobayashi;Takamasa Iimori;Toshio Izawa;Masaji Ohno

  183
  Citations

• Man-designed bleomycin with altered sequence specificity in DNA cleavage

  Masami Otsuka;Takeshi Masuda;Andreas Haupt;Masaji Ohno

  156
  Citations

• SYNTHESIS OF (S)- AND (R)-4((METHOXYCARBONYL)METHYL)-2-AZETIDINONE BY CHEMICOENZYMIC APPROACH

  Masaji Ohno;Susumu Kobayashi;Takamasa Iimori;Yi-Fong Wang

  148
  Citations

• Negamycin, a novel hydrazide antibiotic.

  Shinichi Kondo;Seiji Shibahara;Shuji Takahashi;Kenji Maeda

  143
  Citations

• Structure of coformycin, an unusual nucleoside of microbial origin.

  Unknown

  125
  Citations

• Creation of novel chiral synthons with enzymes and applications to natural product synthesis. 15. Efficient introduction of chiral centers into cyclohexane ring

  Susumu Kobayashi;Keiji Kamiyama;Takamasa Iimori;Masaji Ohno

  123
  Citations

• An Efficient O-Monoalkylation of Dimethyl L-Tartrate via O-Stannylene Acetal with Alkyl Halides in the Presence of Cesium Fluoride

  Nobuo Nagashima;Masaji Ohno

  118
  Citations

• Total syntheses of negamycin and the antipode

  Seiji Shibahara;Shinichi Kondo;Kenji Maeda;Hamao Umezawa

  109
  Citations

• Synthetic analogues and biosynthetic intermediates of bleomycin. Metal-binding, dioxygen interaction, and implication for the role of functional groups in bleomycin action mechanism.

  Y Sugiura;T Suzuki;M Otsuka;S Kobayashi

  102
  Citations

• CHIRALLY SELECTIVE SYNTHESIS OF SUGAR MOIETY OF NUCLEOSIDES BY CHEMICOENZYMATIC APPROACH: L- AND D-RIBOSES, SHOWDOMYCIN, AND CORDYCEPIN

  Y. Ito;T. Shibata;M. Arita;H. Sawai

  94
  Citations

• Total synthesis of bleomycin A21)

  Tomohisa Takita;Yoji Umezawa;Sei ichi Saito;Hajime Morishima

  91
  Citations

• A catalytic enantioselective reaction using a C2-symmetric disulfonamide as a chiral ligand: Simmons-Smith cyclopropanation of allylic alcohols by the Et2Zn-CH2I2-disulfonamide system

  Hideyo Takahashi;Masato Yoshioka;Masakatsu Shibasaki;Masaji Ohno

  90
  Citations

• Selective Monoalkylation of Acyclic Diols by Means of Dibutyltin Oxide and Fluoride Salts.

  Nobuo Nagashima;Masaji Ohno

  90
  Citations

• A stereocontrolled synthesis of (−)-bestatin from an acyclic allylamine by iodocyclocarbamation

  Susumu Kobayashi;Toshiyuki Isobe;Masaji Ohno

  86
  Citations

• Synthetic studies on biologically active natural products by a chemicoenzymatic approach: Enantioselective synthesis of C- and N-nucleosides, showdomycin, 6-azapseudouridine and cordycepin

  Masaji Ohno;Yukishige Ito;Masafumi Arita;Tomoyuki Shibata

  84
  Citations

• A catalytic enantioselective reaction using a C2-symmetric disulfonamide as a chiral ligand: cyclopropanation of allylic alcohols by the Et2Zn-CH2I2-disulfonamide system

  Unknown

  4
  Citations