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| Number | Title | Issue Date |
| 6288280 | Racemization of atropisomeric bis(phosphine oxide) compounds A process for the racemization of atropisomeric bis(phosphine oxide) compounds of formula I: ##STR1## in their (S) or (R) or non-racemic form, is useful for preparing optical active bisphosphine ligands, that form optical active complexes with transi... | 09/11/2001 |
| 6037479 | Chiral diarsine compounds Novel, chiral diarsine compounds, which are present in the (R)- or (S)- or (rac)-form, of the formula ##STR1## wherein R signifies an optionally substituted aryl from the group of phenyI, naphthyl, furyl and thienyl; C3-8 -cycloalkyl or C | 03/14/2000 |
| 5072019 | Process for the manufacture of 4-(2-butenylidene)-3,5,5-trimethyl-2-cyclohexen-1-one A method for the manufacture of the four geometric isomers of 4-(2-butenyl)idene)-3,5,5-trimethy-2-cyclohexen-1-one is provided. The process comprises pyrolyzing a compound of the formula ##STR1## wherein R represents lower-alkyl-oxycarbonyl, aryl-ox... | 12/10/1991 |
| 5045567 | Propanolamine derivatives having anti-diabetic effects Propanolamine derivatives of the formula ##STR1## wherein R1 is hydrogen or a group of formula ##STR2## n is the number 0 or 1; R2 and R5 are phenyl, m-halophenyl, m-trifluoromethylphenyl, thienyl or pyridyl; R | 09/03/1991 |
| 4581172 | Substituted pyrimido[6,1-a]isoquinolin-4-ones,pyrimido[6,1-a]benzozepin-4-ones and pyrimido[6,1-a]benzodiazepin-4-ones useful for prevention of thromboses and treating hypertension Pyrimidone derivatives of the formula ##STR1## wherein n is the integer 1 or 0; A1 and A2 are independently methylene or mono-lower alkyl or di-lower alkyl methylene; X is methylene, mono-lower alkyl or di-lower alkyl methylene,... | 04/08/1986 |
| 4455311 | Imidazoquinazoline derivatives which inhibit the aggregation of blood platelets, inhibit gastric secretion or have activity on the circulatory system Imidazoquinazolines of the formula ##STR1## wherein one of R1 or R2 is hydrogen, chlorine, bromine, C1-4 -n-alkyl or C1-4 -n-alkoxy and the other is --N(R,R"), wherein R and R" are C1-4 -n-alkyl ... | 06/19/1984 |
| 4442289 | 4-Oxothieno[3,2-d]pyrimidine acetic acid esters Antiallergically-active pyrimidine derivatives of the formula ##STR1## wherein R1 is hydrogen, chlorine, bromine or C1-4 -alkyl, and R2 is hydrogen or methyl, prepared starting from corresponding 4-oxothieno[3,2-d]pyrimidi... | 04/10/1984 |
| 4390540 | Imidazoquinazolines having pharmaceutical activity Imidazoquinazolines of the formula ##STR1## wherein R1, R2 and R3 are hydrogen, halogen, C1-4 -alkyl, C1-4 -alkoxy or C2-5 -alkoxyalkyl; or two of R1, R2 and R | 06/28/1983 |
| 4376121 | Antiallerigically-active imidazothienopyrimidine derivatives Antiallergically-active pyrimidine derivatives of the formula ##STR1## wherein R1 is hydrogen, chlorine, bromine or C1-4 -alkyl, and R2 is hydrogen or methyl, prepared starting from corresponding 4-oxothieno-[3,2-d]py... | 03/08/1983 |
| 4204073 | Process for producing carotenoids A process for producing trimethyl oxo or hydroxy substituted cycopentenone food coloring agents including intermediates in this process.... | 05/20/1980 |
