Abstract: Compounds of the following formula (I) and pharmaceutically acceptable esters and salts thereof: Ar is a phenyl group which may optionally be substituted by from 1 to 3 substituents selected from the group consisting of halogen atoms and trifluoromethyl groups. Said compounds (and pharmaceutically acceptable esters and salts thereof) have excellent antifungal activity.

Abstract: Compounds of the following formula (I) and pharmaceutically acceptable esters and salts thereof: Ar is phenyl group which may optionally be substituted by from 1 to 3 substituents selected from the group consisting of halogen atoms and trifluoromethyl groups. Said compounds (and pharmaceutically acceptable esters and salts thereof) have excellent antifungal activity.

Abstract: Compounds of the following formula (I) and pharmaceutically acceptable esters and salts thereof: Ar is a phenyl group which may optionally be substituted by from 1 to 3 substituents selected from the group consisting of halogen atoms and trifluoromethyl groups. The compounds (and pharmaceutically acceptable esters and salts thereof) have excellent antifungal activity.

Abstract: A triazole compound having the formula: wherein Ar1 represents a phenyl group which may be substituted; Ar2 represents a phenyl group which may be substituted; R0 represents a hydrogen atom or a lower alkyl; R1 represents a lower alkyl; R2 to R5 each represnet a hydrogen atom or an unsubstituted or halo substituted alkyl; n represnets 0 to 2; p represents 0 or 1; q, r and s each represent 0 to 2; A represents a 4- to 7-membered carbon ring or a 4- to 7-membered heterocyclic, not including 1,3-dioxan-5-yl. The compound of the present invention exhibits an excellent antifungal activity.

Abstract: A compound having the formula: 1

Abstract: A compound having the formula: 1

Abstract: A triazole compound having the formula: wherein Ar1 represents a phenyl group which may be substituted, Ar2 represents a heterocyclic group which may be substituted, R0 represents a hydrogen atom or a lower alkyl; R1 represents a lower alkyl; R2 to R5 each represent a hydrogen atom or an unsubstituted or halo substituted alkyl; n represents 0 to 2; p represents 0 or 1; q, r and s each represent 0 to 2; A represents a 4- to 7-membered carbon ring or a 4- to 7-membered heterocyclic group. The compound of the present invention exhibits an excellent antifungal activity.

Abstract: A triazole compound having the formula: ##STR1## wherein Ar.sup.1 represents an optionally substituted phenyl, Ar.sup.2 represents an optionally substituted phenyl, R.sup.0 represents a hydrogen atom or a lower alkyl; R.sup.1 represents a lower alkyl; R.sup.2 to R.sup.5 represent a hydrogen atom or an unsubstituted or halo substituted alkyl, n represents 0 to 2; p represents 0 or 1; q, r and s each represent 0 to 2; and A represents a 1,3-dioxan-5-yl. The triazole compound of the present invention exhibits an excellent antifungal activity.

Abstract: Compounds of formula (I): ##STR1## (wherein R.sup.1 represents hydrogen or a hydroxy-protecting group, R.sup.2 and R.sup.3 represent hydrogen, alkyl or aryl; R.sup.4 represents optionally substituted alkyl, alicyclic heterocyclic, aryl, aromatic heterocyclic, optionally substituted alkenyl or optionally substituted alkynyl; R.sup.5 represents hydrogen or a carboxy-protecting group; and R.sup.6 represents alkoxy, aryloxy, dialkylamino or diarylamino or two or R.sup.6 together represent o-phenylenedioxy or three together represent CH.sup.3 C(--CH.sub.2 O--).sub.3) may be prepared by reacting the corresponding carbonyl compound with a compound of formula P(R.sup.6).sub.3. Compounds (I) may be cyclised to prepare carbopenem derivatives, many of which have valuable antibiotic activity.

Abstract: Compounds of formula (I): ##STR1## in which: Ar is optionally substituted phenyl; is R.sup.1 is alkyl; R.sup.2 is substituted alkyl, substituted cycloalkyl R.sup.2 or optionally substituted heterocyclic; and n is 0, 1 or 2; and pharmaceutically acceptable salts and esters thereof have valuable anti-fungal properties and can be used for pharmaceutical and veterinary treatment. Methods of preparing these compounds are also provided.

Abstract: Compounds of formula (I): ##STR1## in which: Ar is optionally substituted phenyl; R.sup.1 is alkyl; R.sup.2 is substituted alkyl or substituted cycloalkyl; and n is 0, 1 or 2; and pharmaceutically acceptable salts and esters thereof have valuable anti-fungal properties and can be used for pharmaceutical and veterinary treatment. Methods of preparing these compounds are also provided.

Abstract: Compounds of formula (I): ##STR1## [in which: R.sup.1 and R.sup.2 are hydrogen or alkyl, or together are cycloalkyl; R.sup.3 and R.sup.4 are hydrogen, alkyl or phenyl, or together are cycloalkyl; or R.sup.1 and R.sup.3 together are cycloalkyl fused to the oxetane ring; Ar is phenyl substituted by R.sup.5, R.sup.6 and R.sup.7, where R.sup.5, R.sup.6 and R.sup.7 are hydrogen, halogen, alkyl, alkoxy, halogenated alkyl or halogenated alkoxy; and R.sup.8 and R.sup.9 are hydrogen or alkyl] and salts thereof have valuable agricultural and pharmaceutical anti-fungal or fungicidal activity. They may be prepared by a variety of processes.

Abstract: Penem-3-carboxylic acid derivatives of formula (I): ##STR1## (wherein: R.sup.1 represents a hydrogen atom, an alkyl group, an alkoxy group, a hydroxyalkyl group, an acyloxyalkyl group, an alkylsulphonyloxyalkyl group, an arylsulphonyloxyalkyl group or a trialkylsilyloxyalkyl group;R.sup.2 represents a hydrogen atom or an alkyl group;R.sup.3 represents a hydrogen atom, an amino-protecting group or a group of formula ##STR2## in which R.sup.5 and R.sup.6 are the same or different and each represents a hydrogen atom or an alkyl group;A represents a branched-chain alkylene group; andR.sup.4 represents a carboxy group or a protected carboxy group)and pharmaceutically acceptable salts thereof, may be prepared by heating a corresponding phosphorus-ylide compound or by reacting a corresponding azetidin-2-one with a suitable phosphorous acid triester or triamide, and have been found to have excellent antibacterial activity accompanied by a very low acute toxicity.