According to the present invention, options for materials for organic devices such as materials for organic EL elements are increased by addition of a cycloalkane, by condensation, to a polycyclic aromatic compound in which a plurality of aromatic rings are linked together by boron atoms, oxygen atoms, and the like. By using a novel cycloalkane-condensed polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent emission efficiency and element life is provided.

Compounds of the formula I ##STR00001## in which R.sup.1 denotes A, Ar, Cyc, Het, COA or CN, R.sup.2 denotes SO.sub.2A, SOA, SA, SO.sub.2NHA, SO.sub.2NA.sub.2, S(═NH,═O)A, S(═NH).sub.2A, NO.sub.2, Hal, CN, A, Het.sup.1, COOH or COOA, R.sup.3 denotes H or Hal, R.sup.4 denotes H or Hal, n denotes 1, 2 or 3, A denotes unbranched or branched alkyl having 1-6 C-atoms, Cyc denotes cyclic alkyl with 3 to 7 C-atoms, Ar denotes phenyl, Het denotes a mono- or bicyclic aromatic, unsaturated or saturated heterocycle having 1 to 4 N, O, and/or S atoms, Het.sup.1 denotes a mono- or bicyclic aromatic, unsaturated or saturated heterocycle having 1 to 4 N, O, and/or S atoms, and Hal denotes F, Cl, Br, or I, are inhibitors of HIF-2α, and can be employed for the treatment of diseases such as cancer.

Compounds of the formula I ##STR00001## in which R.sup.1 denotes A, Ar, Cyc, Het, COA or CN, R.sup.2 denotes SO.sub.2A, SOA, SA, SO.sub.2NHA, SO.sub.2NA.sub.2, S(═NH,═O)A, S(═NH).sub.2A, NO.sub.2, Hal, CN, A, Het.sup.1, COOH or COOA, R.sup.3 denotes H or Hal, R.sup.4 denotes H or Hal, n denotes 1, 2 or 3, A denotes unbranched or branched alkyl having 1-6 C-atoms, Cyc denotes cyclic alkyl with 3 to 7 C-atoms, Ar denotes phenyl, Het denotes a mono- or bicyclic aromatic, unsaturated or saturated heterocycle having 1 to 4 N, O, and/or S atoms, Het.sup.1 denotes a mono- or bicyclic aromatic, unsaturated or saturated heterocycle having 1 to 4 N, O, and/or S atoms, and Hal denotes F, Cl, Br, or I, are inhibitors of HIF-2α, and can be employed for the treatment of diseases such as cancer.

Disclosed is a highly efficient organic light-emitting device that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and includes a capping layer formed using a compound having a characteristic structure in the organic light-emitting device.

Disclosed is a highly efficient organic light-emitting device that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and includes a capping layer formed using a compound having a characteristic structure in the organic light-emitting device.

A process for preparing the benzothiophen-2-yl boronate of formula (VI)

##STR00001##

which serves as an intermediate for production of medicaments and for production of medicaments for treatment and/or prophylaxis of proliferative disorders, such as cancer and tumor diseases.

A process for preparing the benzothiophen-2-yl boronate of formula (VI)

##STR00001##

which serves as an intermediate for production of medicaments and for production of medicaments for treatment and/or prophylaxis of proliferative disorders, such as cancer and tumor diseases.

A novel agent for introducing a protecting group for a hydroxy group and/or a mercapto group that can be introduced and removed under mild conditions is provided. The agent for introducing a protecting group for a hydroxy group and/or mercapto group of a substrate compound having the hydroxy group and/or mercapto group is represented by the following formula (I), wherein A represents a ring structure having 1 to 5 rings in which two carbon atoms of an adjacent benzene ring are included, the ring structure comprises a substituted or unsubstituted five-membered ring or six-membered ring and optionally include a heterocycle; each of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently a hydrogen atom or a linear or branched alkyl group having 1 to 5 carbon atoms; and X is a halogen atom or OSO.sub.2R.sup.5 (R.sup.5=an aryl group or an alkyl group).

A novel agent for introducing a protecting group for a hydroxy group and/or a mercapto group that can be introduced and removed under mild conditions is provided. The agent for introducing a protecting group for a hydroxy group and/or mercapto group of a substrate compound having the hydroxy group and/or mercapto group is represented by the following formula (I), wherein A represents a ring structure having 1 to 5 rings in which two carbon atoms of an adjacent benzene ring are included, the ring structure comprises a substituted or unsubstituted five-membered ring or six-membered ring and optionally include a heterocycle; each of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently a hydrogen atom or a linear or branched alkyl group having 1 to 5 carbon atoms; and X is a halogen atom or OSO.sub.2R.sup.5 (R.sup.5=an aryl group or an alkyl group).

A photoelectric conversion element, including a first electrode, a second electrode, and at least one organic layer being present between the first electrode and the second electrode, in which the organic layer contains at least two kinds of compounds having the same skeletons and different substituents in combination.