Abstract: A compound of formula (1): ##STR1## in which R.sub.1 represents a 1,1-dimethylethyl, triphenylmethyl, methoxymethyl or benzyloxymethyl group; andR.sub.2 represents a C.sub.1 -C.sub.4 alkyl group.

Abstract: A compound represented by formula (V): ##STR1## in which R.sub.1 is selected from the group consisting of hydrogen, unbranched and branched C.sub.1-7 alkyl, unbranched and branched C.sub.3-9 alkenyl, and (C.sub.3-7)cycloalkyl(C.sub.1-6)alkyl groups, and R.sub.2 is selected from the group consisting of hydrogen, unbranched and branched C.sub.1-7 alkyl,(C.sub.3-7)cycloalkyl(C.sub.1-3)alkyl, aryl(C.sub.1-3)alkyl, aryloxy(C.sub.1-3)alkyl, arylthio(C.sub.1-3) alkyl, arylsulphonyl(C.sub.1-3)alkyl and heteroaryl (C.sub.1-3) alkyl groups.

Abstract: Derivatives of benzeneborinic acid, preparation thereof and use thereof as synthetic intermediates.

Abstract: Compounds corresponding to the formula (I) ##STR1## in which X represents dibromomethyl, formyl, (C.sub.1-4)alkyl, or a group CH(OR.sub.5).sub.2 or CH(OH)OR.sub.5, wherein the or each R.sub.5 is hydrogen (C.sub.1-3)alkyl or the two R.sub.5 's in the case of CH(OR.sub.5).sub.2 are linked to provide a 1,3-dioxolane or 1,3-dioxane ring, and Y represents hydrogen, 1,1-dimethylethyl, triphenylmethyl, trimethylstannyl, tributylstannyl, (1,1-dimethylethyl)dimethylsilyl, (1,1-dimethylethyl)diphenylsilyl, 2-cyanoethyl, or a group CH.sub.2 OR.sub.6 wherein R.sub.6 is methyl, phenylmethyl, 1,1-dimethylethyl, 2,2,2-trichloroethyl, benzyloxycarbonyl or 2,2,2-trichloroethyloxycarbonyl, Y being in position 1 or 2 on the tetrazole ring. The compounds of formula (I) are useful as intermediates in the synthesis of compounds possessing therapeutic activity.

Abstract: A process for preparing a compound represented by formula ##STR1## by deprotecting a compound represented by formula (VII) ##STR2## in which R.sub.1 represents an unbranched or branched C.sub.1-7 alkyl, unbranched or branched C.sub.3-9 alkenyl, or (C.sub.3-7)cycloalkyl(C.sub.1-6)alkyl, and R.sub.2 represents hydrogen, unbranched or branched C.sub.1-7 alkyl, (C.sub.3-7)cycloalkyl(C.sub.1-3)alkyl, aryl(C.sub.1-3)alkyl optionally substituted on the ring-system, aryloxy(C.sub.1-3)alkyl optionally substituted on the ring-system, arylthio(C.sub.1-3)alkyl optionally substituted on the ring-system, arylsulphonyl(C.sub.1-3)alkyl optionally substituted on the ring-system, and heteroaryl(C.sub.1-3)alkyl optionally substituted on the ring-system.

Abstract: Derivatives of benzeneborinic acid corresponding to the formula (1) ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 represent, each independently of the others, either a (C.sub.1 -C.sub.2)alkyl group or an aryl group, the group --CR.sub.1 R.sub.2 R.sub.3 being in position 1 or 2 of the tetrazole ring, preparation thereof, and method of use as synthetic intermediates.

Abstract: A protective cover (20) for a communication device (10) comprises a protective layer having a shape closely resembling the shape of said communication device (10) to closely contour to said communication device (10).

Abstract: A header for an electronic circuit includes two complementary portions. The electronic circuit is a flexible circuit with leads on opposite side edges. The opposite side leads are received by the header portions and fixed in place as by epoxy. The two header portions are then snapped together to form the header. One of the header portions includes tongues which are received in slots of the other header portions for maintaining alignment of the two portions. Clips are provided on each of the header portions for interconnecting with complementary clips of the other header portion.