Total syntheses and synthetic studies of spongiane diterpenes

Diastereoselective synthesis of spongian diterpenes. Total synthesis of the furanoditerpene (−)-spongia-13(16),14-diene

Abstract An effective diastereoselective synthesis of the marine-sponge metabolite (−)-spongia-13(16),14-diene 1 is achieved starting from S-(+)-carvone via a homochiral phenanthrenone as the key intermediate for the construction of the furan ring system. S-(+)-Carvone was transformed into the phenanthrenone 2a in six steps (53% overall yield), using an intramolecular Diels-Alder reaction as the key step. Conversion of the enone function in 2a into an epoxyaldehyde function followed by cyclisation and aromatisation in acid conditions completed the construction of ring D.

Aromatic abietane diterpenoids: total syntheses and synthetic studies

ChemInform Abstract: Diastereoselective Synthesis of Spongian Diterpenes. Total Synthesis of the Furanoditerpene (-)-Spongia-13(16),14-diene.

Abstract An effective diastereoselective synthesis of the marine-sponge metabolite (−)-spongia-13(16),14-diene 1 is achieved starting from S-(+)-carvone via a homochiral phenanthrenone as the key intermediate for the construction of the furan ring system. S-(+)-Carvone was transformed into the phenanthrenone 2a in six steps (53% overall yield), using an intramolecular Diels-Alder reaction as the key step. Conversion of the enone function in 2a into an epoxyaldehyde function followed by cyclisation and aromatisation in acid conditions completed the construction of ring D.

La humanización en los planes de salud mental en España

Resumen Introduccion La asistencia en salud mental (SM) presenta importantes retos, especialmente en el campo de la humanizacion. Los objetivos fueron identificar las medidas de humanizacion en los planes de SM de las comunidades autonomas (CC. AA.) espanolas y las prioridades a desarrollar en este ambito. Material y metodos Un grupo amplio y multidisciplinar de personas implicadas en la asistencia en SM participo en un consenso, segun un metodo Delphi modificado, basado en el «pensamiento de diseno», en 3 fases: 1) identificacion de medidas de humanizacion en los planes de SM de las CC. AA.; 2) analisis de la implantacion de estas medidas, y 3) identificacion de prioridades de humanizacion…

Long-range magnetic order in the porous metal–organic framework Ni(pyrazine)[Pt(CN)4]

A combined study involving DFT calculations, neutron scattering, heat capacity and magnetic measurements at very low temperatures demonstrates the long-range magnetic ordering of Ni(pyrazine)[Pt(CN)4] below 1.9 K, describing its antiferromagnetic spin arrangement. This compound belongs to the family of porous coordination polymers M(pyrazine)[Pt(CN)4] (M = divalent metal), renowned for showing interesting combinations of porosity and magnetic properties. The possibility of including long-range magnetic ordering, one of the most pursued functional properties, opens new perspectives for the multifunctionality of this class of compounds.

ChemInform Abstract: Aromatic Abietane Diterpenoids: Their Biological Activity and Synthesis

Covering: 1980s–2014 In this study, the biological properties of natural abietane-type diterpenoids with an aromatic C ring are reviewed. An overview of the synthetic studies of this group of abietanes, including dehydroabietic acid, callitrisic acid and ferruginol, is presented. The review contains about 160 references.

Aromatic abietane diterpenoids: their biological activity and synthesis

Covering: 1980s–2014 In this study, the biological properties of natural abietane-type diterpenoids with an aromatic C ring are reviewed. An overview of the synthetic studies of this group of abietanes, including dehydroabietic acid, callitrisic acid and ferruginol, is presented. The review contains about 160 references.

Synthetic derivatives of aromatic abietane diterpenoids and their biological activities

Naturally occurring aromatic abietane diterpenoids (dehydroabietanes) exhibit a wide range of biological activities. A number of synthetic studies aimed at modifying the abietane skeleton in order to obtain new potential chemotherapeutic agents have been reported. In this study, the biological activities of synthetic derivatives of aromatic abietane diterpenoids are reviewed.

Dynamical properties of water in living cells

With the aim of studying the effect of water dynamics on the properties of biological systems, in this paper, we present a quasi-elastic neutron scattering study on three different types of living cells, differing both in their morphological and tumor properties. The measured scattering signal, which essentially originates from hydrogen atoms present in the investigated systems, has been analyzed using a global fitting strategy using an optimized theoretical model that considers various classes of hydrogen atoms and allows disentangling diffusive and rotational motions. The approach has been carefully validated by checking the reliability of the calculation of parameters and their 99% confi…

ChemInform Abstract: Aromatic Abietane Diterpenoids: Total Syntheses and Synthetic Studies

ChemInform Abstract: Total Syntheses and Synthetic Studies of Spongiane Diterpenes

ChemInform Abstract: Synthetic Derivatives of Aromatic Abietane Diterpenoids and Their Biological Activities

Naturally occurring aromatic abietane diterpenoids (dehydroabietanes) exhibit a wide range of biological activities. A number of synthetic studies aimed at modifying the abietane skeleton in order to obtain new potential chemotherapeutic agents have been reported. In this study, the biological activities of synthetic derivatives of aromatic abietane diterpenoids are reviewed.

Erratum to: Dynamical properties of water in living cells (Front. Phys, (2018) 13, 1, 138301, 10.1007/s11467-017-0731-5)

In the original publication of the article, the label Q2(A-2) in Fig. 4 should be replaced with Q(A-1). Below is the correct Fig. 4.[Figure not available: see fulltext.]. © 2018, Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature.