Zobrazeno 1 - 10
of 22
pro vyhledávání: '"W. S. G. Maass"'
Autor:
W. S. G. Maass
Publikováno v:
Canadian Journal of Botany. 53:1031-1039
Two tridepsides (tenuiorin and methyl gyrophorate) have been identified as major constituents of Pseudocyphellaria crocata. Two similarly substituted didepsides (methyl evernate and methyl lecanorate) and the monomer methyl orsellinate have been isol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac6eb7d83e5c325e35b395dba5a7b360
https://doi.org/10.1139/b75-121
https://doi.org/10.1139/b75-121
Publikováno v:
Canadian Journal of Chemistry. 55:2839-2844
Physciosporin, a new chlorinated depsidone, has been isolated from the lichen Pseudocyphellaria physciospora and identified as methyl 2-chloro-4-formyl-3,8-dihydroxy-1,6,9-trimethyl-11-oxo-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylate (methyl 5-chlorov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e37100ba77672705996ad7cf41e4d89e
https://doi.org/10.1139/v77-394
https://doi.org/10.1139/v77-394
Publikováno v:
Canadian Journal of Chemistry. 53:727-737
Chemical and spectroscopic (u.v., i.r., 1H and 13C n.m.r., and mass) data are reported which suggest that cochliodinol is 2,5-dihydroxy-3,6-di(5′-(2″-methylbut-Δ2″-ene)-indolyl-3′)-cyclo-hexadiene-1,4-dione (1a).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47bbc8c41dc030854c8eb9ff3d19d179
https://doi.org/10.1139/v75-102
https://doi.org/10.1139/v75-102
Publikováno v:
Canadian Journal of Microbiology. 23:845-851
It has been shown that 2,5-dihydroxy-1,4-benzoquinones decrease vegetative growth and inhibit spore germination of 12 species of fungi belonging to six diverse genera. The nature of the substituents at the 3 and 6 positions of the quinone ring also a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce844df91ef1ad978f4b2a8ff1052b59
https://doi.org/10.1139/m77-126
https://doi.org/10.1139/m77-126
Publikováno v:
Canadian Journal of Chemistry. 52:4117-4122
The diacetate and di-O-methyl derivative of polyporic acid have anomalous mass spectra. Ions are observed at m/e values equal to the molecular weight but ions 2 mass units larger than these, often of greater intensity, are also observed. The abundanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bdb235698a3b1a323be43ae33c652ec
https://doi.org/10.1139/v74-616
https://doi.org/10.1139/v74-616
Autor:
W. S. G. Maass, J. S. Craigie
Publikováno v:
Canadian Journal of Botany. 42:805-813
A survey of 14 species of Sphagnum has shown that the amino acids and organic acids are essentially those encountered in higher plants. At least one unidentified amino compound occurs in the rare S. strictum. Malic and citric acid are the dominant or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::465544e3d629da2efda501da413a972c
https://doi.org/10.1139/b64-072
https://doi.org/10.1139/b64-072
Autor:
W. S. G. Maass, A. C. Neish
Publikováno v:
Canadian Journal of Botany. 45:59-72
Tracer experiments with 14C-labeled compounds showed that phenylalanine, phenyllactic acid, and polyporic acid were readily incorporated into both pulvinic dilactone and calycin. Pulse-labeling experiments with phenylalanine and polyporic acid showed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db2cf750d25ad310057ad7d856a12cdc
https://doi.org/10.1139/b67-004
https://doi.org/10.1139/b67-004
Publikováno v:
Archives of environmental contamination and toxicology. 3(4)
Eighteen lichens from a variety of habitats were treated with 4-chlorobiphenyl (4-CB). All, as determined by means of radioactive tracers, were shown to partially convert 4-CB to 4-chloro-4'-hydroxybiphenyl. Only one species (Pseudocyphellaria crocat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fa06f92065bebcf4dd78bec2e587a97
https://pubmed.ncbi.nlm.nih.gov/816260
https://pubmed.ncbi.nlm.nih.gov/816260
Publikováno v:
Chemischer Informationsdienst. 6
The diacetate and di-O-methyl derivative of polyporic acid have anomalous mass spectra. Ions are observed at m/e values equal to the molecular weight but ions 2 mass units larger than these, often of greater intensity, are also observed. The abundanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6b7afee312fcb0169a40e2bea927728
https://doi.org/10.1002/chin.197515070
https://doi.org/10.1002/chin.197515070
Publikováno v:
Chemischer Informationsdienst. 8
Physciosporin, a new chlorinated depsidone, has been isolated from the lichen Pseudocyphellaria physciospora and identified as methyl 2-chloro-4-formyl-3,8-dihydroxy-1,6,9-trimethyl-11-oxo-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylate (methyl 5-chlorov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2020fb19dddc79de10008223dd6893f8
https://doi.org/10.1002/chin.197747370
https://doi.org/10.1002/chin.197747370