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B1-Phytoprostanes Trigger Plant Defense and Detoxification Responses1[w]
Results suggest that PPB1 represent stress signals that improve plants capacity to cope better with a variety of stresses. Expand
Ancistrotanzanine A, the first 5,3'-coupled naphthylisoquinoline alkaloid, and two further, 5,8'-linked related compounds from the newly described species Ancistrocladus tanzaniensis.
The first phytochemical investigation of the recently discovered East African liana Ancistrocladus tanzaniensis is described, resulting in the isolation and structural elucidation of two new naphthylisoquinoline alkaloids and a hitherto unprecedented 5,3'-coupling type between the naphthalene and isoquinoline portions. Expand
Different polyketide folding modes converge to an identical molecular architecture
This work has detected the bioactive anthraquinone chrysophanol, which serves as a chemical defense in diverse eukaryotic organisms, in a bacterial Nocardia strain, thereby permitting the first comparative biosynthetic study. Expand
B 1-Phytoprostanes Trigger Plant Defense and Detoxification Responses 1
Julius-von-Sachs-Institute for Biosciences, Pharmaceutical Biology, University of Wuerzburg, D–97082 Wuerzburg, Germany (C.L., S.B., M.J.M.); Unité Mixte de Recherche Centre National de la RechercheExpand
Ancistrotanzanine C and related 5,1'- and 7,3'-coupled naphthylisoquinoline alkaloids from Ancistrocladus tanzaniensis.
The structural elucidation was achieved by chemical, spectroscopic, and chiroptical methods and the biological activities of the alkaloids against the pathogens causing malaria tropica, leishmaniasis, Chagas' disease, and African sleeping sickness were evaluated. Expand
Ancistrobenomine a, the first naphthylisoquinoline oxygenated at Me-3, and related 5,1'-coupled alkaloids, from the "new" plant species ancistrocladusbenomensis.
Three new 5,1'-coupled naphthylisoquinoline alkaloids have been isolated from the stem bark of a botanically as yet undescribed highland liana Ancistrocladus sp. Expand
Six naphthylisoquinoline alkaloids and a related benzopyranone from a Congolese Ancistrocladus species related to Ancistrocladus congolensis.
From the roots of a recently discovered Ancistrocladus taxon, with close affinities to Ancists congolensis regarding molecular ITS sequence data, six naphthylisoquinoline alkaloids, along with a likewise benzopyranone carboxylic acid, are isolated. Expand
Optically active bisbibenzyls from Bazzania trilobata: isolation and stereochemical analysis by chromatographic, chiroptical, and computational methods
Abstract Bazzanin S, a new chlorinated bisbibenzyl of the isoplagiochin D type, as well as isoplagiochin D itself were isolated from the liverwort Bazzania trilobata. The structure of bazzanin S wasExpand
New insecticidal rocaglamide derivatives and related compounds from Aglaia oligophylla.
All isolated rocaglamide derivatives exhibited strong insecticidal activity toward neonate larvae of the polyphageous pest insect Spodoptera littoralis when incorporated into an artificial diet, with LC(50) values varying between 2.15 and 6.52 ppm. Expand
Saludimerines A and B, novel-type dimeric alkaloids with stereogenic centers and configurationally semistable biaryl axes.
The first biarylic bis-morphinanedienone alkaloids, saludimerines A and B, isolated from a tree of Croton flavens (Euphorbiaceae) are described, giving rise to atropo-diastereomers that are configurationally stable at room temperature but slowly interconvert in methanolic solution within several days. Expand