Enantioselective Total Synthesis of (+)-Psiguadial B

The first enantioselective total synthesis of the cytotoxic natural product (+)-psiguadial B is reported. Key features of the synthesis include (1) the enantioselective preparation of a key cyclobutane intermediate by a tandem Wolff rearrangement/asymmetric ketene addition, (2) a directed C(sp^3)–H alkenylation reaction to strategically forge the C1–C2 bond, and (3) a ring-closing metathesis to build the bridging bicyclo[4.3.1]decane terpene framework

Professional Development as a Process of Cultural Brokering: Positioning Coaches as Cultural Brokers

Teachers who serve diverse students must navigate two “worlds.” One world is that of standardized curricula and pedagogy and the other is culturally relevant education. To effectively navigate these worlds, teachers need assistance from “cultural brokers” who can help make sense of the tension that emerges when these two educational worlds interact. This study analyzes the work of two Center for Research on Education, Diversity, and Excellence coaches who worked as cultural brokers to help teachers integrate multiple pedagogical models. The results indicate the coaches shifted their strategies depending on teacher preferences, and helped teachers overcome constraints within their classrooms and curricula. Framing coaches as “cultural brokers” may be a useful metaphor for others assisting teachers with navigating the tension that emerges in implementing culturally relevant education

A modular approach to prepare enantioenriched cyclobutanes: synthesis of (+)-rumphellaone A

A modular synthesis of enantioenriched polyfunctionalized cyclobutanes was developed that features an 8-aminoquinolinamide directed C–H arylation reaction. The C–H arylation products were derivatized through subsequent decarboxylative coupling processes. This synthetic strategy enabled a 9-step enantioselective total synthesis of the antiproliferative meroterpenoid (+)-rumphellaone A

Beliefs about pharmaceutical medicines and natural remedies explain individual variation in placebo analgesia

This study examined whether placebo responses were predicted by a theoretical model of specific and general treatment beliefs. Using a randomised cross-over, experimental design (168 healthy individuals) we assessed whether responses to a cold pressor task were influenced by two placebo creams described as Pharmaceutical vs Natural origin. We assessed whether placebo responses were predicted by pre-treatment beliefs about the treatments (placebo) and by beliefs about the pain. The efficacy of both Pharmaceutical and Natural Placebos in reducing Pain Intensity was predicted by aspects of pain catastrophizing including Feelings of Helplessness (Pharmaceutical: B=0.03, p<0.01, Natural: B=0.02, p<0.05) and Magnification of Pain (Pharmaceutical: B=0.04, p<0.05, Natural: B=0.05, p<0.05) but also by pre-treatment Necessity beliefs (Pharmaceutical: B=0.21, p<0.01, Natural: B=0.16, p<0.05) and, for the Pharmaceutical condition, by more general beliefs in personal sensitivity to pharmaceuticals (B=0.14, p<0.05). Treatment Necessity beliefs also partially mediated the effects of Helplessness on placebo responses. Treatment Necessity beliefs for the Pharmaceutical Placebo were influenced by general pharmaceutical beliefs whereas Necessity beliefs for the Natural Placebo were informed by general background beliefs about holistic treatments. Our findings demonstrate that treatment beliefs influence the placebo effect suggesting that they may offer an additional approach for understanding the placebo effect. PERSPECTIVE: Placebo effects contribute to responses to active analgesics. Understanding how beliefs about different types of medicines influence placebo analgesia may be useful in understanding variations in treatment response. Using the cold-pressor paradigm we found that placebo analgesia is influenced by beliefs about natural remedies, pharmaceutical medicines and about pain

Depression and state anxiety scores during assisted reproductive treatment are associated with outcome: a meta-analysis

This meta-analysis investigated whether state anxiety and depression scores during assisted reproductive technology (ART) treatment and changes in state anxiety and depression scores between baseline and during ART treatment are associated with treatment outcomes. PubMed, PsycInfo, Embase, ScienceDirect, Web of Science and Scopus were searched for studies to include in the meta-analysis. Meta-analytic data were analysed using random effects models to estimate standardised mean differences. 11 studies (2202 patients) were included. Women who achieved a pregnancy had significantly lower depression scores during treatment than women who did not become pregnant -0.302 (95% CI: -0.551 - -0.054, z = -2.387, p = 0.017; I2= 77.142%, p = 0.001). State anxiety scores were also lower in women who became pregnant -0.335 (95% CI: -0.582 - -0.087: z=-2.649, p=0.008; I2 =81.339%, p = 0.001). However, changes in state anxiety (d=-0.056; 95% CI: -0.195 - 0.082, z = -0.794; I2= 0.00%) and depression scores (d=-0.106; 95% CI: -0.296 - 0.085, z = -1.088; I2= 0.00%) from baseline to treatment were not associated with ART outcomes. Clinics should aim to promote better psychosocial care for patients to help them manage the psychological and physical demands ART treatment, giving realistic expectations

A modular approach to prepare enantioenriched cyclobutanes: synthesis of (+)-rumphellaone A

A modular synthesis of enantioenriched polyfunctionalized cyclobutanes was developed that features an 8-aminoquinolinamide directed C–H arylation reaction. The C–H arylation products were derivatized through subsequent decarboxylative coupling processes. This synthetic strategy enabled a 9-step enantioselective total synthesis of the antiproliferative meroterpenoid (+)-rumphellaone A

Brief report: how adolescents with ASD process social information in complex scenes. Combining evidence from eye movements and verbal descriptions

We investigated attention, encoding and processing of social aspects of complex photographic scenes. Twenty-four high-functioning adolescents (aged 11–16) with ASD and 24 typically developing matched control participants viewed and then described a series of scenes, each containing a person. Analyses of eye movements and verbal descriptions provided converging evidence that both groups displayed general interest in the person in each scene but the salience of the person was reduced for the ASD participants. Nevertheless, the verbal descriptions revealed that participants with ASD frequently processed the observed person’s emotion or mental state without prompting. They also often mentioned eye-gaze direction, and there was evidence from eye movements and verbal descriptions that gaze was followed accurately. The combination of evidence from eye movements and verbal descriptions provides a rich insight into the way stimuli are processed overall. The merits of using these methods within the same paradigm are discussed