The invention relates to a process to prepare a compound of the following formula (I):

##STR00001## in which P represents a protective group of a hydroxyl function which is a —COR.sup.1 group with R.sup.1 representing an aryl or a (C.sub.1-C.sub.6)alkyl, R represents a hydrogen atom or a protective group of a terminal alkyne, from mannose, comprising the following steps: (a) protecting the 5 hydroxyl groups of the mannose by a protective group P; (b) coupling the protected mannose obtained at step (a) with a compound of the following formula (II)

##STR00002##

The present invention also relates to a compound of formula (IIIa):

##STR00003## wherein R.sup.10 represents a hydrogen, a (C.sub.1-C.sub.6)alkyl, —SO.sub.2R.sup.6, —C(O)R.sup.6 or —C(O)OR.sup.6, with R.sup.6 being a hydrogen or a radical selected from a (C.sub.1-C.sub.6)alkyl, an aryl, a heteroaryl, a 3-8 membered ring cycloalkyl and a 3-8 membered ring heterocycloalkyl, said radical being optionally substituted by a (C.sub.1-C.sub.6) alkyl, an aryl, a heteroaryl, a 3-8 membered ring cycloalkyl or a 3-8 membered ring heterocycloalkyl, a halogen, —NR.sup.8R.sup.9, —CN, —C(O)OR.sup.8, —C(O)NR.sup.8R.sup.9 or —OR.sup.8, with R.sup.8 and R.sup.9 being independently a hydrogen atom or a (C.sub.1-C.sub.6) alkyl, or R.sup.8 and R.sup.9 form together with the nitrogen to which they are bound a 3-8 membered ring heterocycloalkyl, and R″ represents —COR.sup.1 group with R.sup.1 being an aryl or a (C.sub.1-C.sub.6)alkyl.

Provided are a compound and an organic electro-optical device containing the same. The compound has a structure represented by Formula I. The organic electro-optical device comprises an anode, a cathode, and at least one organic thin film layer located between the cathode and the anode. The molecule of the compound provided by the present disclosure has higher rigidity, a large conjugated system, a deeper LUMO energy level, a higher triplet energy level and good molecular stability, and is not easy to crystallize, and thus the compound can be used as an electron transport material or a hole blocking material of the organic electro-optical device, facilitating the reduction of the turn-on voltage of the device, the improvement of current efficiency and the increase of service life.

Provided are a compound and an organic electro-optical device containing the same. The compound has a structure represented by Formula I. The organic electro-optical device comprises an anode, a cathode, and at least one organic thin film layer located between the cathode and the anode. The molecule of the compound provided by the present disclosure has higher rigidity, a large conjugated system, a deeper LUMO energy level, a higher triplet energy level and good molecular stability, and is not easy to crystallize, and thus the compound can be used as an electron transport material or a hole blocking material of the organic electro-optical device, facilitating the reduction of the turn-on voltage of the device, the improvement of current efficiency and the increase of service life.

Compounds, compositions and methods for improving one or more agronomic characteristics of desired crop plants are described herein. The compounds include oxazoles, oxadiazoles and thiadiazoles.

Compounds, compositions and methods for improving one or more agronomic characteristics of desired crop plants are described herein. The compounds include oxazoles, oxadiazoles and thiadiazoles.

Near infrared and shortwave infrared dyes can have polymethine structures.

Hydrogel particles are provided that include a crosslinked polymer and a drug conjugated to the crosslinked polymer. The hydrogel particles may include a pH sensitive moiety and a redox sensitive moiety. The hydrogel particles also may be dispersed in a host hydrogel. Kits and methods of drug delivery and treatment also are provided.

Hydrogel particles are provided that include a crosslinked polymer and a drug conjugated to the crosslinked polymer. The hydrogel particles may include a pH sensitive moiety and a redox sensitive moiety. The hydrogel particles also may be dispersed in a host hydrogel. Kits and methods of drug delivery and treatment also are provided.

Disclosed are compounds of formulae I and II, and pharmaceutically acceptable salts and prodrugs thereof, which are inhibitors of the complement system. Also provided are pharmaceutical compositions comprising such a compound, and methods of using the compounds and compositions in the treatment or prevention of a disease or condition characterized by aberrant complement system activity.

##STR00001##

The invention relates to heterocyclic compounds with benzo[c]coumarin structures and to electronic devices, in particular organic electroluminescent devices, containing said compounds.