- 作者: Horng-Shing Shya, Chia-Li Wua*, Claudia Paulb, Wilfried A. K霵igb and Uni-Juni Eana
- 作者服務機構: Department of Chemistry, Tamkang University, Tamsui, Taiwan 251, R.O.C.
- 中文摘要: A novel linear dihydrodichromene derivative, metacalypogin, was identified from the Taiwanese liverwort Metacalypogeia alternifolia. Together with data from M. cordifolia, the chemical marker of the genus Metacalypogeia is obvious chroman derivatives, which is far different from that of Calypogeia, the other genus in the same family. In addition, two isomeric diterpenoids of cembrane-type were identified from the Chinese liverwort Chandonanthus hirtellus. The relative stereostructures of the latter two isomers were proved by X-ray crystallography. Both compounds were unstable in chloroform solution and further oxidized to the corresponding peroxy hemiacetal derivatives.
- 英文摘要: --
- 中文關鍵字: Metacalypogeia alternifolia; Metacalypogeia cordifolia; Calypogeiaceae; Chandonanthus hirtellus; Lophoziaceae; Liverwort; Metacalypogin; 8; 9-Dihydro-10-methoxy-2; 2; 7; 7- tetramethyl-2H; 7H-benzo[1; 2-b:5; 4-b兡dipyran; Dihydrodichromen....
- 英文關鍵字: Metacalypogeia alternifolia; Metacalypogeia cordifolia; Calypogeiaceae; Chandonanthus hirtellus; Lophoziaceae; Liverwort; Metacalypogin; 8; 9-Dihydro-10-methoxy-2; 2; 7; 7- tetramethyl-2H; 7H-benzo[1; 2-b:5; 4-b兡dipyran; Dihydrodichromen....