Tricholosterols A-D, four new ergosterol derivatives from the mushroom Tricholoma terreum.

Four ergosterol derivatives, named tricholosterols A-D (1-4), have been isolated from the fruiting bodies of Tricholoma terreum. Their chemical structures have been determined using a combination of spectroscopic analysis as well as computational methods. Compound 1 possesses a rare D-ring opening ergosterol skeleton, while compounds 2-4 are rare degraded ergosterols.

Cascading Photoelectric Detecting and Chemiresistive Gas-Sensing Properties of Pb S I Nanowire Mesh for Multi-Factor Accurate Fire Alarm.

Accurate fire warning is very important for people's life and property safety. The most commonly used fire alarm is based on the detection of a single factor of gases, smoke particles, or temperature, which easily causes false alarm due to complex environmental conditions. A facile multi-factor route for fabricating an accurate analog fire alarm using a Pb S I nanowire mesh based on its photoelectric and gas-sensing dual function is presented.

Sesquiterpenoids and Xanthones from the Kiwifruit-Associated Fungus sp. and Their Anti-Pathogenic Microorganism Activity.

Nine previously undescribed sesquiterpenoids, bipolarisorokins A-I (-); two new xanthones, bipolarithones A and B ( and ); two novel sativene-xanthone adducts, bipolarithones C and D ( and ); as well as five known compounds (-) were characterized from the kiwifruit-associated fungus sp. Their structures were elucidated by extensive spectroscopic methods, electronic circular dichroism (ECD), C NMR calculations, DP4+ probability analyses, and single crystal X-ray diffractions. Many compounds exhibited anti-pathogenic microorganism activity against the bacterium pv.

Organic cation directed one-dimensional cuprous halide compounds: syntheses, crystal structures and photoluminescence properties.

In recent years, organic-inorganic hybrid metal halides have emerged as a highly promising class of semiconducting light emitting diodes (LEDs) due to their fascinating photoluminescence properties. Here, by specifically selecting different organic cations as templates, a series of new hybrid cuprous halides have been solvothermally prepared, namely [Me-Py]CuI (1), [(Me)-DABCO]CuI (2), [Me-MePy]CuI (3), and [HDABCO]CuX (X = I (4) and Br (5)). These hybrid cuprous halides feature one-dimensional (1D) [CuI], [CuI] and [CuX] (X = Br, I) chains surrounded and charge-balanced by organic cations.

Transition metal complex dye-sensitized 3D iodoplumbates: syntheses, structures and photoelectric properties.

Here, we prepared the first series of 3D hybrid iodoplumbates with novel porous frameworks of [Pb8I21]5- directed by transition metal complex (TMC) cationic dyes of [TM(2.2-bipy)3]2+. The microporous materials exhibit outstanding visible light-driven photoelectric properties due to the effective photosensitization of the TMC dyes.

Synthesis of new halogenated pentiptycene building blocks.

The synthesis of central-ring halogenated pentiptycene phenols 12-14 and dihalogenated pentiptycenes 15-17 is reported. Their utilities as building blocks for preparing new pentiptycene-derived pi-conjugated systems through the Sonogashira, Heck, and Suzuki reactions are also demonstrated.

A synthetic strategy for the preparation of cyclic peptide mimetics based on SET-promoted photocyclization processes.

A novel method for the synthesis of cyclic peptide analogues has been developed. The general approach relies on the use of SET-promoted photocyclization reactions of peptides that contain N-terminal phthalimides as light absorbing electron acceptor moieties and C-terminal alpha-amidosilane or alpha-amidocarboxylate centers. Prototypical substrates are prepared by coupling preformed peptides with the acid chloride of N-phthalimidoglycine.