Egis Gyogyszergyar Rt.

Zoltan Ratkai

Gyula Simig

Jozsef Barkoczy

Gabor Gigler

Laszlo Balazs

Gabor Blasko

Kalman Nagy

Andras Egyed

Karoly Tihanyi

Zsuzsa Szent Kirallyi

Imre Doman

Peter Seres

Peter Kotay Nagy

Geza Szabo

György Levay

Bernadett Martonné Marko

Annamaria Simo

Ferenc Barta

Gyorgyi Vereczkeyne Donath

The invention relates to new 2,3-benzodiazepine derivatives of general Formula (I), (wherein Rstands for methyl, formyl, carboxy, cyano, &#x2014;CH&#x2550;NOH, &#x2014;CH&#x2550;NNHCONHor &#x2014;NRR, wherein Rand Rindependently from each other represent hydrogen or lower alkyl or together with the nitrogen atom, they are attached to, form a 5- or 6-membered, saturated or unsaturated heterocyclic ring optionally containing one or more further nitrogen, sulfur and/or oxygen atom(s); Ris nitro or amino; Rstands for hydrogen, lower alkanoyl or CO&#x2014;NRR, wherein Rand Rindependently from each other stand for hydrogen, lower alkoxy, lower alkyl or lower cycloalkyl or together with the nitrogen atom, they are attached to, form a 5- or 6-membered, saturated or unsaturated heterocyclic ring optionally containing one or more further nitrogen, sulfur and/or oxygen atom(s); Ris hydrogen or lower alkyl; the dotted lines have the following meaning: if Rand Rare not present, the bond between positions Cand Cis a single bond and the bond between positions Cand Nis a double bond; if Rand Rare present, the bonds between positions Cand Cand between position Cand Nare single bonds; and if Ris present and Ris missing, the bond between positions Cand Cis a double bond and the bond between positions Cand Nis a single bond) and salts thereof. The invention compounds have neuroprotective effect.

2,3-benzodiazepine derivatives

The invention relates to a process for the preparation of amorphous atorvastatin calcium by recrystallization of crude atorvastatin from an organic solvent which comprises dissolving crude amorphous atorvastatin calcium in a lower alkanol containing 2-4 carbon atoms or a mixture of such alkanols under heating and isolating the amorphous atorvastatin calcium precipitated after cooling. The atorvastatin calcium obtained is a known valuable agent useful in treating hyperlipidemia and hypercholestrolemia.

Process for the preparation of amorphous atorvastatin calcium

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Budapest, Hungary

Zoltan Ratkai