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Dive into the research topics where Shigeru Hasegawa is active.

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Featured researches published by Shigeru Hasegawa.


Tetrahedron Letters | 1991

Synthesis and antiviral activity of oxetanocin derivatives

Masayuki Kitagawa; Shigeru Hasegawa; Seiichi Saito; Nobuyoshi Shimada; Tomohisa Takita

Abstract The sugar part of natural oxetanocin A was chemically modified. Some of the derivatives demonstrated strong antiviral activity against human immunodeficiency virus (HIV).


The Journal of Antibiotics | 1986

Oxetanocin, a novel nucleoside from bacteria.

Nobuyoshi Shimada; Shigeru Hasegawa; Takashi Harada; Takayuki Tomisawa; Akio Fujii; Tomohisa Takita


The Journal of Antibiotics | 1986

THE X-RAY STRUCTURE DETERMINATION OF OXETANOCIN

Hikaru Nakamura; Shigeru Hasegawa; Nobuyoshi Shimada; Akio Fujii; Tomohisa Takita; Yoichi Iitaka


The Journal of Antibiotics | 1987

Derivatives of oxetanocin: Oxetanocins H, X and G, and 2-aminooxetanocin A.

Nobuyoshi Shimada; Shigeru Hasegawa; Seiichi Saito; Takaaki Nishikiori; Akio Fujii; Tomohisa Takita


Archive | 1985

Antibiotic derivative of adenine

Nobuyoshi Shimada; Shigeru Hasegawa; Takashi Harada; Takayuki Tomizawa; Akio Fujii


Archive | 1989

Oxetanocin-related compounds and process for producing same

Seiichi Saito; Shigeru Hasegawa; Katsutoshi Takahashi; Nobuyoshi Shimada; Jun-Ichi Seki; Hiroo Hoshino; Yukihiro Nishiyama; Kenichi Matsubara; Takemitsu Nagahata


Archive | 1989

Oxetanocin-related compounds and pharmaceutical compositions containing them

Seiichi Saito; Shigeru Hasegawa; Katsutoshi Takahashi; Nobuyoshi Shimada; Jun-Ichi Seki; Hiroo Hoshino; Yukihiro Nishiyama; Kenichi Matsubara; Takemitsu Nagahata


Archive | 1987

Novel antibiotic NK84-0218 and process for the production of the same

Nobuyoshi Shimada; Shigeru Hasegawa; Takashi Harada; Takayuki Tomizawa; Akio Fujii


Archive | 1991

Oxetanocin derivative having imidazole base group

Seiichi Saito; Masayuki Kitagawa; Akira Masuda; Shigeru Hasegawa; Fuminori Abe


Archive | 1990

Novel process for producing oxetanocin G

Seiichi Saito; Shigeru Hasegawa; Masayuki Kitagawa; Nobuyoshi Shimada; Noriyuki Yamashita

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Akio Fujii

National Institutes of Health

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