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Tetrahedron | 1963

Structure of securinine

S. Saito; Keishi Kotera; N. Shigematsu; A. Ide; N. Sugimoto; Zen-ichi Horii; Miyoji Hanaoka; Yasuhiko Yamawaki; Yasumitsu Tamura

Abstract The structure (XXVII) proposed for securinine is confirmed by synthetic structural proof of the key degradation products, lactam-carbinol B (XXIII) and quinolizidine B (XX).


Tetrahedron | 1967

The total synthesis of securinine and virosecurinine

Zen-ichi Horii; Miyoji Hanaoka; Yasuhiko Yamawaki; Yasumitsu Tamura; S. Saito; N. Shigematsu; Keishi Kotera; H. Yoshikawa; Y. Sato; Hideo Nakai; N. Sugimoto


Tetrahedron Letters | 1972

Structure of phyllantidine

Zen-ichi Horii; Takeshi Imanishi; Masakazu Yamauchi; Miyoji Hanaoka; J. Parello; S. Munavalli


Chemical & Pharmaceutical Bulletin | 1966

Total synthesis of securinine

Seiichi Saito; Hiroshi Yoshikawa; Yasuhiko Sato; Hideo Nakai; Norio Sugimoto; Zen Ichi Horii; Miyoji Hanaoka; Yasumitsu Tamura


Chemical & Pharmaceutical Bulletin | 1972

Synthetic Studies on Securitinine and Related Compounds. I. Stereochemistries of the Catalytic Hydrogenation Products of 6-(4-Methoxy-2-pyridyl)-1, 4-dioxaspiro [4, 5] decan-6-ol

Zen-ichi Horii; Takeshi Imanishi; Tetsuaki Tanaka; Ikuko Mori; Miyoji Hanaoka; Chuzo Iwata


Chemical & Pharmaceutical Bulletin | 1967

Structure of Securitinine.

Zen-ichi Horii; M. Ikeda; Miyoji Hanaoka; Masashige Yamauchi; Yasumitsu Tamura; Seiichi Saito; Tadasu Tanaka; Keishi Kotera; Norio Sugimoto


Chemical & Pharmaceutical Bulletin | 1972

Synthetic Studies on Securitinine and Related Compounds. II. A Synthesis of 10a-Episecuritinine

Zen-ichi Horii; Takeshi Imanishi; Miyoji Hanaoka; Chuzo Iwata


Chemical & Pharmaceutical Bulletin | 1974

Synthetic Studies on Anthracyclinones. XIII. Conversion of Bisanhydro-γ-rhodomycinone into Bisanhydrodaunomycinone

Zen-ichi Horii; Yutaka Ozaki; Shiro Yamamura; Takako Nishikado; Miyoji Hanaoka; Takefumi Momose


Chemical & Pharmaceutical Bulletin | 1971

Synthesis of Bisanhydrodaunomycinone

Zen-ichi Horii; Yutaka Ozaki; Shiro Yamamura; Miyoji Hanaoka; Takefumi Momose


Chemical & Pharmaceutical Bulletin | 1972

2-Oxo-1, 2, 3-oxathiazolidines. Its Application to Separation of Diastereoisomers of β-Amino-alcohols, 6-(4-Methoxy-2-piperidyl)-1, 4-dioxaspiro [4, 5] decan-6-ol and 2-Hydroxy-2-(2-piperidyl) cyclohexanone

Zen-ichi Horii; Takeshi Imanishi; Miyoji Hanaoka; Chuzo Iwata

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