Abstract: Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkylammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring.

Abstract: Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkylammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring.

Abstract: Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkylammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring. Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkyl ammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring, e.g. the compounds of the general formula shown below. Formula (A-)a.

Abstract: Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkylammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring. Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkyl ammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring, e.g. the compounds of the general formula shown below. Formula (A-)a.

Abstract: A process for the preparation of a tautomeric mixture of compounds of the formulas ##STR1## wherein W is hydrogen or C.sub.6 H.sub.13, which comprises treating a compound of the formula ##STR2## wherein R is unsubstituted or substituted alkoxy, arylalkoxy, aryloxy or amine and R.sup.1 is hydrogen or when R is alkoxy, substituted alkoxy, substituted amine, unsubstituted or substituted arylalkoxy R.sup.1 can also be metal, with a compound of the formula ##STR3## wherein W is as described above, both X and Y are reducible groups or X is hydrogen and Y is a reducible group or Y is hydrogen and X is a reducible group and, Z is hydroxy or a leaving group to form the compound of formula IV ##STR4## wherein W, X, Y and R are as defined above, the compound of formula IV is treated with a low valent metal to form a tautomeric mixture of compounds of formulas I and Ia, which are useful in the synthesis of tetrahydrolipstatin.

Abstract: A process for the preparation of a tautomeric mixture of compounds of the formulas ##STR1## wherein W is hydrogen or C.sub.6 H.sub.13, which comprises treating a compound of the formula ##STR2## wherein R is unsubstituted or substituted alkoxy, arylalkoxy, aryloxy or amine and R.sup.1 is hydrogen or when R is alkoxy, substituted alkoxy, substituted amine, unsubstituted or substituted arylalkoxy R.sup.1 can also be metal, with a compound of the formula ##STR3## wherein W is as described above, both X and Y are reducible groups or X is hydrogen and Y is a reducible group or Y is hydrogen and X is a reducible group and, Z is hydroxy or a leaving group to form the compound of formula IV ##STR4## wherein W, X, Y and R are as defined above, the compound of formula IV is treated with a low valent metal to form a tautomeric mixture of compounds of formulas I and Ia, which are useful in the synthesis of tetrahydrolipstatin.

Abstract: The disclosure describes unsymmetrical 1,4-bis-(aminoalkylamino)-anthracene-9,10-diones useful in the treatment of neoplasms. Also described is a process of preparing same starting from 1,4-dimethoxyanthracene-9,10-dione which is reacted with an aminoalkylamine. The reaction product is treated with a dialkylaminoethylamine or a N-heteroethylamine to give the unsymmetrical compound.