Studies on the Constituents of the Volatile Oil From the Leaf of Chamaecyparis Obtusa, Sieb. Et Zucc., F. Formosana, Hayata, or Arisan-Hinoki. I

Analysis of leaf essential oils from the indigenous ve conifers of Taiwan

“…[22][23][24] Kafuku et al 22 and Kafuku and Nozone 23 studied the leaf essential oil of this species. In their reports, they mentioned that the acidic fraction had a main component of C 10 H 16 O 2 and hinokic acid, while the remaining components were caproic acid and phenolic compounds.…”

Tetsuo Nozoe (1902−1996)

“…At the Nozoe Laboratory in Tokyo, he extended his research into this area, and found that complex systems, including the compound 76, [286,295] could be synthesized. He also prepared a compound 77, which he named tropocoronand, and demonstrated its potential for the chelation of ions [277,289,291] [1,4]benzoxzine', and his audience was duely impressed, among others, by the perseverance and enthusiasm with which he was able to prepare and to separate reaction mixtures containing approximately 65 products!'' [450]…”

“…Nozoe had participated in every ISNA meeting until the 8th meeting in Braunschweig in 1995, and was the honorary member of the organizing committee in the 6th meeting in Osaka. He also made the following contributions; a set of plenary lectures entitled ''Recent Advances in the Chemistry of Troponoids and Related Compounds in Japan'' [432] at ISNA-1 and ''Cyclohepta[b] [1,4]benzoxazine and Related Compounds -Some Novel Aspects in Troponoid Chemistry'' [443] at ISNA-4. However, what impressed the participants most was that he listened to all of the lectures from his seat in the front row of the lecture hall, and that he presented his newest results as a poster at every meeting himself, and enthusiastically discussed his chemistry with all those interested.…”

New Lignans from the Heartwood of Chamaecyparis obtusa var. formosana.

“…The MS spectrum of chamalignolide (2) gave an exact mass at m/z 326.1158, indicating the molecular formula C 19 H 18 O 5 . It also exhibited negative optical rotation, while the IR spectrum of 2 exhibited bands attributable to hydroxyl, aromatic and g-lactone groups.…”