Results 151 to 160 of about 1,299 (187)

Depsidone synthesis. VII. Vicanicin and norvicanicin

Australian Journal of Chemistry, 1976
The lichen Psoroma sphinctrinurn (Mont.) Nyl. occurs in two or more chemical strains. 2,7-Dichloro- 3 - hydroxy -8-methoxy- 1,4,6,9 - tetramethyl - 11H- dibenzo[b,e][l,4]dioxepin- 11-one (vicanicin) (2), a known depsidone, is a metabolite of one strain, and 2,7-dichloro-3,8-dihydroxy-1,4,6,9-tetramethyl-1lH-dibenzo[b,e][1,4]dioxepin-11-one ...
MV Sargent, P Vogel, JA Elix, BA Ferguson   +3 more
openaire   +1 more source

Depsidones and a dihydroxanthenone from the endophytic fungi Simplicillium lanosoniveum (J.F.H. Beyma) Zare & W. Gams PSU-H168 and PSU-H261.

Fitoterapia, 2019
Three new compounds including two depsidones (simplicildones J and K) and one dihydroxanthenone (globosuxanthone E) together with nine known compounds were obtained from the crude extracts of two endophytic fungi Simplicillium lanosoniveum (J.F.H. Beyma)
V. Rukachaisirikul, Supaporn Chinpha, P. Saetang, S. Phongpaichit, Siriporn Jungsuttiwong, Sarinya Hadsadee, J. Sakayaroj, S. Preedanon, Prapapan Temkitthawon, K. Ingkaninan   +9 more
semanticscholar   +1 more source

The Structure of the Lichen Depsidones Fulgidin and Isofulgidin

Australian Journal of Chemistry, 1990
The depsidone isofulgidin (1) (2,4,7-trichloro-3-hydroxy-8-methoxy-1,6-dimethyl-11H-dibenzo-[ b,el [1,4]dioxepin-11-one), has been isolated from the lichen Rinodina dissa together with atranorin and diploicin (3). lsofulgidin (1) has also been detected in the lichens Hafellia parastata and Fulgensia canariensis.
AA Birkbeck, MV Sargent, JA Elix
openaire   +1 more source

Loxodin, a depsidone of lichens of Parmelia species

Phytochemistry, 1970
Abstract Loxodin isolated from Parmelia flavescentireagens Gyel. and some other lichens of Parmelia spp. was shown to be methyl norlobarate (I).
T. Komiya, S. Kurokawa
openaire   +1 more source

Cytotoxic Prenylated Depsidones from Garcinia parvifolia

Journal of Natural Products, 2000
Leaf extracts of Garcinia parvifolia provided relatively high yields of four novel, cytotoxic prenylated depsidones. The structures were determined mainly by detailed NMR spectral analysis and X-ray crystallography.
Xu, Y.-J., Chiang, P.-Y., Lai, Y.-H., Vittal, J.J., Wu, X.-H., Tan, B.K.H., Imiyabir, Z., Goh, S.-H.   +7 more
openaire   +2 more sources

Botryorhodines K and L, two new cytotoxic depsidones from a fungus of the genus Arcopilus

Journal of antibiotics (Tokyo. 1968), 2023
Zhiwei Zhang, Yiwei Ge, Y. In, Y. Igarashi   +3 more
semanticscholar   +1 more source

A theory of biogenesis of lichen depsides and depsidones

Proceedings of the Indian Academy of Sciences - Section A, 1944
Lichen depsides and depsidones are considered to arise from a common source (XIV) which originates from aldol condensation between a hexose and a biose and elimination of water. Oxidation and reduction lead to various modifications of this C8 unit and increase in the length of the sidechain arises from condensation with simple sugars and reduction ...
openaire   +1 more source

Diphenyl ethers and depsidones from the endophytic fungus Aspergillus unguis BCC54176

Tetrahedron, 2021
Karoon Sadorn, Siriporn Saepua, Nantiya Bunbamrung, N. Boonyuen, Somjit Komwijit, P. Rachtawee, P. Pittayakhajonwut   +6 more
semanticscholar   +1 more source

Two New Depsidones from Parmelia saxatilis

Chemistry of Natural Compounds, 2021
Xigurigan, Tunuomula, Haliga, S. Bai, Ganchimeg, Qirigeer, L. Yang, Laxinamujila Bai   +7 more
semanticscholar   +2 more sources

Two new depsidones from the fungus Lasiodiplodia pseudotheobromae

Tetrahedron Letters, 2022
Yu-Han Liang, Yuyi Zheng, Yong-Chang Shen, Qin Li, Yuling Lu, Saiyi Ye, Xiao-Nian Li, Dongyan Li, Chunmei Chen, Hucheng Zhu, Yonghui Zhang   +10 more
semanticscholar   +1 more source