Disclosed is a phenyl boronic acid compound represented by Structural Formula (I): ##STR1## Ar is a substituted or unsubstituted aryl group. Z and Z' are independently --O--. --NH-- or --S--. X is an electron withdrawing group. R is a substituted or unsubstituted straight chained hydrocarbyl group optionally comprising one or more amine, ammonium, ether, thioether or phenylene linking groups and Y is --H, an amine, --[NH--(CH.sub.2).sub.q ].sub.r --NH.sub.2, halogen, --CF.sub.3, thiol ammonium, ...

A method is provided for inhibiting growth of cancer cells comprising contacting said cells with an effective growth-inhibiting amount of a compound of the formula (II): ##STR1## or a physiologically acceptable salt thereof, wherein A.sup.1 and A.sup.2 are individually L-amino acid residues selected from the group consisting of Ala, Pro, Gly, Glu, Leu, Lys, Phe, Ser, Val, Ile, Arg, Tyr, Thr, Asp, Asn and Gly; R.sup.1 is C.sub.1 -C.sub.6 (alkyl) which is unsubstituted or is substituted with an ar...

Novel boronic acid and ester and carboxyl-modified amino acid compounds of the Formula I, which are inhibitors of trypsin-like enzymes, are disclosed : where R.sup.1, Z, R.sup.2 arid A are defined within.

Salts of a pharmaceutically acceptable divalent metal and an organoboronic acid drug. Examples of such metals are calcium, magnesium and zinc. The organoboronic acid drug may be a boropeptide protease inhibitor. The salts may be formulated in oral dosage form.

Novel boronic acid and ester and carboxyl-modified amino acid compounds of the Formula I, which are inhibitors of trypsin-like enzymes, are disclosed : where R.sup.1, Z, R.sup.2 and A are defined within.

Disclosed is a phenyl boronic acid compound represented by Structural Formula (I): ##STR00001## Ar is a substituted or unsubstituted aryl group. Z and Z' are independently --O--, --NH-- or --S--. X is an electron withdrawing group. R is a substituted or unsubstituted straight chained hydrocarbyl group optionally comprising one or more amine, ammonium, ether, thioether or phenylene linking groups and Y is --H, an amine, --[NH--(CH.sub.2).sub.q].sub.r--NH.sub.2, halogen, --CF.sub.3, thiol, ammoniu...

Boron compound complexing reagents, boron compound complexes, and methods of synthesizing these reagents and complexes are disclosed. These reagents and complexes include those shown in General Formula IV and General Formula VI. In one embodiment, the reagent of General Formula IV may be used to form a complex with a boron compound, such as a complex shown in General Formula VI. ##STR1## In one embodiment, group Z comprises a spacer selected from a saturated or unsaturated chain of up to about 6...

Boron compound complexing reagents, intermediate reagents of those reagents, and methods of synthesizing these reagents are disclosed. These reagents, including those shown as General Formula II may be used, after further reactions described herein, to complex with boronic compounds, such as phenylboronic acid or derivatives thereof. ##STR1## In one embodiment, group Z comprises a spacer selected from a saturated or unsaturated chain of up to about 6 carbon equivalents in length, an unbranched s...

Boron compound complexing reagents and methods of synthesizing these reagents are disclosed. These reagents, including those shown as General Formula I and General Formula II may be used, after further reactions described herein, to complex with boronic compounds, such as phenylboronic acid or derivatives thereof. ##STR1##

Compound of formula (I) ##STR1## in which: R.sub.1 and R.sub.2, which are identical or different, represent hydrogen or alkyl or alternatively R.sub.1 and R.sub.2 form, with the carbon atom which bears them, cycloalkyl, R.sub.3 represents hydrogen or alkyl, phenyl or benzyl, R.sub.4 represents: optionally substituted amino, optionally substituted amindino, optionally substituted guanidino, optionally substituted isothioureido, optionally substituted iminomethylamino, mercapto substituted with he...