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8 results on '"Minamida, Yu"'

6. Two new brominated C15-acetogenins from the red alga Laurencia japonensis.

Author

Ishii, Takahiro, Miyagi, Miyu, Shinjo, Yuto, Minamida, Yu, Matsuura, Hiroshi, Abe, Tsuyoshi, Kikuchi, Norio, and Suzuki, Minoru

Subjects
RED algae, TERPENES
Abstract

We report on the chemical characteristics of the red alga Laurencia japonensis, collected off the coast of Yoshio, Katsuura, Boso Peninsula, Japan. We isolated two new brominated C15-acetogenins in this species, which we name katsuurenyne A (1) and katsuurenyne B (2), along with two already known halogenated terpenes [2,10-dibromo-3-chloro-α-chamigrene (7) and aplysiadiol (8)]. We extensively analysed spectral data (from IR, ESI-MS, 1D-NMR and 2D-NMR) to confirm the structure of these compounds. [ABSTRACT FROM AUTHOR]

Published
2020
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7. New acetogenin katsuurallene from Laurencia saitoicollected from Katsuura, Japan

Author

Minamida, Yu, Matsuura, Hiroshi, Ishii, Takahiro, Miyagi, Miyu, Shinjo, Yuto, Sato, Kosuke, Kamada, Takashi, Mihara, Yoshihiro, Togashi, Iwao, Sugimoto, Keisuke, Abe, Tsuyoshi, Kikuchi, Norio, and Suzuki, Minoru

Abstract

We examined the chemical constitution of the red alga Laurencia saitoiPerestenko, collected from Katsuura, Boso Peninsula, Chiba Prefecture, Japan. This specimen produced a new polyhalogenated acetogenin, named katsuurallene (1), which structure was determined by the spectral methods, along with known diterpene, deoxyparguerol (2) and triterpene, thyrsiferol (3). In this paper we describe the structural elucidation of katsuurallene together with some biological activities.

Published
2022
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8. Two new brominated C 15 -acetogenins from the red alga Laurencia japonensis .

Author

Ishii T, Miyagi M, Shinjo Y, Minamida Y, Matsuura H, Abe T, Kikuchi N, and Suzuki M

Subjects
Acetogenins isolation & purification, Animals, Halogenation, Insecticides chemistry, Insecticides pharmacology, Japan, Magnetic Resonance Spectroscopy, Molecular Structure, Spectrometry, Mass, Electrospray Ionization, Terpenes chemistry, Weevils drug effects, Acetogenins chemistry, Acetogenins pharmacology, Laurencia chemistry
Abstract

We report on the chemical characteristics of the red alga Laurencia japonensis , collected off the coast of Yoshio, Katsuura, Boso Peninsula, Japan. We isolated two new brominated C 15 -acetogenins in this species, which we name katsuurenyne A ( 1 ) and katsuurenyne B ( 2 ), along with two already known halogenated terpenes [2,10-dibromo-3-chloro-α-chamigrene ( 7 ) and aplysiadiol ( 8 )]. We extensively analysed spectral data (from IR, ESI-MS, 1D-NMR and 2D-NMR) to confirm the structure of these compounds.

Published
2020
Full Text
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