Cyclopentadienyliron dicarbonyl dimer: A simple tool for the hydrosilylation of aldehydes and ketones under air

International audienceThe readily available iron complex [CpFe(CO)2]2 (1) exhibits good catalytic activity in the hydrosilylation of aldehydes and ketones in the presence of diethoxymethylsilane. The procedure described is air-tolerant and applicable to a wide range of substrate

Enantioselective Prins cyclization: BINOL-derived phosphoric acid and CuCl synergistic catalysis.

International audienceThe first catalytic enantioselective Prins cyclization is disclosed. The reaction is catalyzed by the combination of a chiral BINOL-derived bis-phosphoric acid and CuCl. The process consists of a tandem Prins/Friedel-Crafts cyclization that affords the hexahydro-1H-benzo[f]isochromenes products with three new contiguous stereogenic centers in high yields, and good enantio- and excellent diastereoselectivities

Disease recognition is related to specific autobiographical memory deficits in alcohol-dependence

The particularly high treatment gap in alcohol-dependence suggests the existence of important barriers to treatment decision and in particular difficulties in problem recognition. This study tested the relation between problem recognition and self-related memories. Forty-one recently detoxified alcohol-dependent individuals (AD) were compared to twenty alcoholic subjects that were abstinent for 6 months or more (recruited among alcoholics-anonymous (AA)), and to twenty controls on autobiographical memories elicited by pictures depicting or not alcohol using the autobiographical memory test. Autonoetic consciousness was measured with the Remember/Know paradigm. We tested whether memories performances were related with data obtained on the readiness to change questionnaire (RCQ) or with consciousness of the severity of drinking. AD subjects provided less specific memories than control and AA subjects, and fewer Remember responses than controls. The deficits in AD subjects were not specific for memories elicited by pictures depicting alcohol, suggesting a global deficit. Autobiographical memories specificity was negatively correlated to scores of consciousness of the severity of drinking but not to RCQ. Our results support potential recovery of autobiographical memory with abstinence. AD’s deficits in autobiographical memory were related to capacities to recognize the severity and therefore may be a barrier to treatment decision

Miscellanea Herpetologica Gabonica V & VI

We report the first observations of the orange morph and new locality records for Atherissquamigera (Viperidae) in Gabon, and new Gabonese locality records, ecological data orunpublished museum material for Pelusios castaneus and P. chapini (Pelomedusidae),Kinixys erosa (Testudinidae), Trionyx triunguis (Trionychidae), Crocodylus niloticus,Mecistops cataphractus and Osteolaemus tetraspis (Crocodylidae), Agama agama and A.lebretoni (Agamidae), Chamaeleo dilepis, C. oweni and Rhampholeon spectrum(Chamaeleonidae), Hemidactylus echinus and H. mabouia (Gekkonidae), Gerrhosaurusnigrolineatus (Gerrhosauridae), Trachylepis maculilabris and T. p. polytropis (Scincidae),Varanus ornatus (Varanidae), Crotaphopeltis hotamboeia, Dipsadoboa underwoodi,Hapsidophrys smaragdinus, Philothamnus carinatus and P. heterodermus, Rhamnophisaethiopissa, Thrasops flavigularis (Colubridae), Pseudohaje goldii (Elapidae), Aparallactusmodestus, Atractaspis boulengeri, Buhoma depressiceps, Hormonotus modestus,Psammophis cf. phillipsii (Lamprophiidae), Python sebae (Pythonidae), Indotyphlopsbraminus (Typhlopidae), Bitis nasicornis and Causus lichtensteinii (Viperidae). We add onespecies each to Estuaire, Haut-Ogooué and Ogooué-Ivindo provinces’ reptile lists. Twosnake species are added to Ivindo National Park, bringing the total number of reptile speciesrecorded from the park to 64, i.e., half of the species currently recorded from Gabon. Wedocument predation cases of Pycnonotus barbatus (Aves: Pycnonotidae) on Hemidactylusmabouia, Philothamnus heterodermus on Arthroleptis variabilis (Amphibia: Arthroleptidae),Hormonotus modestus on Hemidactylus mabouia, Psammophis cf. phillipsii onGerrhosaurus nigrolineatus, Causus lichtensteinii on Sclerophrys sp. (Amphibia:Bufonidae) and feeding of Varanus ornatus on spaghetti

Synthesis of new bioisosteric hemiasterlin analogues with extremely high cytotoxicity

International audienceIn this article, we report a convenient and efficient method for the synthesis of new simplified derivativesof hemiasterlin in which the α,α-dimethylbenzylic moiety A is replaced by α,β-unsaturated aryl groupsas Michael acceptor. Most of these derivatives have a strong cytotoxic activity on three human tumorcell lines (KB, Hep-G2 and MCF7). Analogs 17b and 17f showed a high cytotoxicity against KB andHep-G2 cancer cell lines comparable to paclitaxel and ellipticine

Sympatric occurrence of the white-winged warbler Bradypterus carpalis and Grauer\u27s rush warbler B. graueri in Rwanda

Volume: 7Start Page: 85End Page: 8

Synthesis of Stachybotrin C

International audienc

PNSCM : short overview of research topics.

International audienc

The validity of Kupeornis Serle

Volume: 108Start Page: 54End Page: 5

Further additions to the bird fauna of Rwanda

Volume: 8Start Page: 60End Page: 6