著者

山村 庄亮 三義 英一

出版者

公益社団法人 日本化学会

雑誌

化学と教育 (ISSN:03862151)

巻号頁・発行日

vol.41, no.7, pp.438-443, 1993-07-20 (Released:2017-07-13)

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人の場合, 眠りは意識が分化される一つの方法と考えられ, 通常地球の動きに合わせた時間的, 同期的動きをするともいわれている。植物の場合でもオジギソウ, ネムノキなどは体内時計により制御されたリズム, すなわち概日リズム(circadian rhythm)によってほぼ1日周期で就眠運動を行う。そして, 今世紀のはじめには, これらの運動が化学物質によって引起こされることがすでにわかっていた。しかし, 植物の就眠物質と覚せい物質が明らかになったのは, つい最近のことである。物質サイドから生物に共通な体内時計の本質を突止めることができるか, 興味のつきないテーマである。

著者

鈴木 利貞 長谷川 宏司 富田-横谷 香織 津布楽 洋和 吉田 滋樹 日下部 功 小瀬村 誠治 山村 庄亮 山田 小須弥 三木 洋一

出版者

日本雑草学会

雑誌

雑草研究 (ISSN:0372798X)

巻号頁・発行日

vol.46, pp.106-107, 2001

著者

吉原 涼子 森 一樹 西山 繁 山村 庄亮 大場 茂 伊藤 義勝

出版者

The Crystallographic Society of Japan

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.40, pp.62-62, 1998

著者

志津里 芳一 山口 修 松永 公浩 玉木 和彦 山村 庄亮 寺田 幸正

出版者

天然有機化合物討論会

雑誌

天然有機化合物討論会講演要旨集

巻号頁・発行日

no.29, pp.333-340, 1987-07-25

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Two sex pheromones of the American cockroach, periplanone A and B, have been isolated by Persoons et al. The structure of the latter was proposed by the same authors, and then its stereostructure including the absolute configuration was unambiguously determined by its synthesis. Furthermore, the structure (1) of periplanone A has been proposed by Persoons et al., on the basis of its spectral data together with some chemical evidence, but the stereochemistry was not known. In order to elucidate the structure of periplanone A, the authors have synthesized two possible hydroazulenones (5 and 6) from germacrene-D by using biomimetic transannular reactions as a key step. However, the spectral data of synthetic compounds were entirely different from those of natural one. Therefore, the ^1H NMR and IR spectral data of periplanone A and its rearrangement product were reexamined, consequently, the structures of both compounds were found to be resembled each other. Clearly, the structure of periplanone A, which is quite labile as compared with the rearrangement product, seems to be represented by one of the possible decalones (I or II), while the latter must be depicted by III or IV. As shown in Table 1 and 2, the coupling constants based on the conformations I and III, obtained from molecular mechanics calculations, were compatible with the observed ones for periplanone A and rearrangement product, respectively. Thus, the stereostructure of periplanone A was elucidated as I.

著者

丹羽 正武 寺田 幸正 井口 正信 山村 庄亮

出版者

天然有機化合物討論会

雑誌

天然有機化合物討論会講演要旨集

巻号頁・発行日

no.23, pp.96-103, 1980-09-10

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From a biogenetic point of view, many sesquiterpenes are considered to be derived from germacrenes or germacrones as an important precurser, and their conformations have been discussed in connection with their transannular reactions as well as with thermal isomeizations. Thus, molecular mechanics calculations were successfully carried out to evaluate relative stabilities of each conformation of several germacrenes in their ground states and transition states. Particularly, molecular mechanics calculation was carried out successfully in the case of thermal reaction of acoragermacrone, and also attempted for the acid-catalyzed reaction of preisocalamendiol leading to the formation of isocalamendiol, although the result so far obtained was not necessarily satisfied. On the basis of the above results, acid and base-catalyzed reactions of epoxygermacrene-D were carried out to give many interesting compounds similar to oppositol, axisonitrile-1, periplanone-A, junenol and so on. Reaction process of these compounds is also presented.

著者

小瀬村 誠治 栗原 伸和 山村 庄亮

出版者

慶応義塾大学日吉紀要刊行委員会

雑誌

慶応義塾大学日吉紀要 自然科学 (ISSN:09117237)

巻号頁・発行日

no.32, pp.39-53, 2002