150 research outputs found
An intramolecular oxa-Michael reaction on α,β-unsaturated α-amino-δ-hydroxycarboxylic acid esters. Synthesis of functionalized 1,3-dioxanes
A highly diastereoselective intramolecular oxa-Michael reaction on α,β-unsaturated α-amino-δ-hydroxycarboxylic acid esters is presented; 1,3-dioxanes functionalized in positions 2,4 and 6 were obtained in good yields and with excellent selectivities; an experimental and computational study was carried out to understand the reaction course in terms of yields and selectivities. This reaction proceeds under mild reaction conditions using highly electrophilic aldehydes and ketones
Guidelines for the diagnosis, prevention and treatment of osteoporosis, 2012
La osteoporosis es una patologĂa en constante crecimiento y que afecta a más de 200 millones de personas a nivel mundial. Las recomendaciones presentes son guĂas para el diagnĂłstico, la prevenciĂłn y tratamiento pero no normas para las decisiones clĂnicas en pacientes individuales. El mĂ©dico debe adaptarlas a situaciones y pacientes deferentes, incorporando factores personales que trascienden los lĂmites de estas guĂas y hacen al saber y al arte del mĂ©dico. Como todo conocimiento mĂ©dico cientĂfico deben ser revisadas y actualizadas periĂłdicamente a medida que se adquieran nuevas, mejores y más efectivas herramientas diagnĂłsticas y terapĂ©uticas.Osteoporosis is a constantly growing disease which affects over 200 million people worldwide. The present recommendations are guidelines for its diagnosis, prevention and treatment, but they do not constitute standards for clinical decisions in individual patients. The physician must adapt them to individual patients and special situations, incorporating personal factors that transcend the limits of these guidelines and are dependent on the knowledge and art of the physician. These guidelines should be reviewed and updated periodically as new, better and more effective diagnostic and therapeutic tools become available.Fil: Schurman, Leon. Grupo de InvestigaciĂłn en OsteopatĂas y Metabolismo Mineral; ArgentinaFil: Bagur, Alicia. Centro de OsteopatĂas MĂ©dicas; ArgentinaFil: Claus Hermberg, Heraldo. Hospital Alemán; ArgentinaFil: Messina, Osvaldo D.. Ministerio de Defensa. Ejercito Argentino. Hospital Militar Central Cirujano Mayor "Cosme Argerich"; ArgentinaFil: Negri, Armando L.. Universidad del Salvador; ArgentinaFil: Sánchez, Ariel. Centro de EndocrinologĂa; ArgentinaFil: González, Claudio. Centro de EducaciĂłn MĂ©dica e Investigaciones ClĂnicas; ArgentinaFil: Diehl, MarĂa. Hospital Italiano de Buenos Aires; ArgentinaFil: Rey, Paula. Universidad del Salvador; ArgentinaFil: Gamba, Julieta. Ministerio de Defensa. Ejercito Argentino. Hospital Militar Central Cirujano Mayor "Cosme Argerich"; ArgentinaFil: Chiarpenello, Javier. Universidad Nacional de Rosario; ArgentinaFil: Moggia, MarĂa Susana. Universidad de Buenos Aires. Facultad de Medicina. Hospital de ClĂnicas General San MartĂn; ArgentinaFil: Mastaglia, Silvina Rosana. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Houssay. Instituto de InmunologĂa, GenĂ©tica y Metabolismo; Argentin
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