Abstract: Novel compounds of Formula ##STR1## are disclosed. Also disclosed is a method of inhibiting Ras function and therefore inhibiting the abnormal growth of cells. The method comprises administering a compound of the above formula to a biological system. In particular, the method inhibits the abnormal growth of cells in a mammal such as a human being.

Abstract: A method of inhibiting Ras function and therefore inhibiting cellular growth is disclosed. The method comprises the administration of a compound of Formula. 1.0 ##STR1## Also disclosed are novel compounds of the formulas: ##STR2## Also disclosed are processes for making 3-substituted compounds of the Formulas 1.1, 1.2 and 1.3.Further disclosed are novel compounds which are intermediates in the processes for making the 3-substituted compounds of Formulas 1.1, 1.2, and 1.3.

Abstract: A method of inhibiting Ras function and therefore inhibiting cellular growth is disclosed. The method comprises the administration of a compound of Formula 1.0 ##STR1## Also disclosed are novel compounds of the formulas: ##STR2## Also disclosed are processes for making 3-substituted compounds of the Formulas 1.1, 1.2 and 1.3.Further disclosed are novel compounds which are intermediates in the processes for making the 3-substituted compounds of Formulas 1.1, 1.2, and 1.3.

Abstract: A method of inhibiting Ras function and therefore inhibiting the abnormal growth of cells is disclosed. The method comprises the administration of a compound of Formula 1.0: ##STR1## to a biological system. In particular, the method inhibits the abnormal growth of cells in a mammal such as a human being.Novel compounds of formulas 5.0, 5.1 and 5.2, wherein R is --C(R.sup.20)(R.sup.21)(R.sup.46), and 5.3, 5.3A and 5.3B, wherein R is --N(R.sup.25)(R.sup.48), are disclosed.Also disclosed are processes for making 3-substituted compounds of Formulas 5.0, 5.1, 5.2 and 5.3.Further disclosed are novel compounds which are intermediates in the process for making 3-substituted compounds of Formulas 5.0, 5.1, 5.2 and 5.3.

Abstract: Novel compounds of Formula ##STR1## are disclosed. Also disclosed is a method of inhibiting Ras function and therefore inhibiting the abnormal growth of cells. The method comprises administering a compound of the Formula 1.0 to a biological system. In particular, the method inhibits the abnormal growth of cells in a mammal such as a human being.

Abstract: A method of inhibiting Ras function and therefore inhibiting the abnormal growth of cells is disclosed. The method comprises the administration of a compound of Formula 1.0: ##STR1## to a biological system. In particular, the method inhibits the abnormal growth of cells in a mammal such as a human being.Novel compounds of formulas 5.0, 5.1 and 5.2, wherein R is --C(R.sup.20)(R.sup.21)(R.sup.46), and 5.3, 5.3A and 5.3B, wherein R is --N(R.sub.25)(R.sub.48), are disclosed.Also disclosed are processes for making 3-substituted compounds of Formulas 5.0, 5.1, 5.2 and 5.3.Further disclosed are novel compounds which are intermediates in the process for making 3-substituted compounds of Formulas 5.0, 5.1, 5.2 and 5.3.

Abstract: Novel compounds of Formula ##STR1## are disclosed. Also disclosed is a method of inhibiting Ras function and therefore inhibiting the abnormal growth of cells. The method comprises administering a compound of the Formula 1.0 to a biological system. In particular, the method inhibits the abnormal growth of cells in a mammal such as a human being.

Abstract: A method of inhibiting Ras function and therefore inhibiting cellular growth is disclosed. The method comprises the administration of a compound containing a tricyclic ring system to a biological system. In particular, the method inhibits cellular growth in a mammal such as a human being.Novel compounds of the formula: ##STR1## are disclosed. Also disclosed are processes for making 3-substituted compounds of Formula 4.0.Further disclosed are novel compounds which are intermediates in the processes for making the 3-substituted compounds of Formula 4.0.

Abstract: 3-O-Glycosyl derivatives of 16-membered macrolides such as O-.alpha.-L-cladinosyl-(1.fwdarw.3)-12,13-dehydro-12,13-deoxorosaramicin, 2", 4",4'"-tri-O-acetyl-O-(4'-O-phenoxyacetyl-.alpha.-L-cladinosyl)-(1.fwdarw. 3)-desmyconsin and pharmaceutically acceptable acid addition salts thereof useful as antibacterials are disclosed.

Abstract: There are disclosed novel di- and tri-O-acetyl-23-O-demycinosyl-4"-O-iso-valeryltylosins and the pharmaceutically acceptable salts thereof, which have improved activity as antibacterials and provide higher blood levels than other tylosin derived compounds. These compounds have the following structural formula ##STR1## wherein R is acetyl or hydrogen and z is for example O or ##STR2##Processes for selectively deacylating the 2' and 4"-positions of 3,2',4",4'"-tetra-O-acyltylosin or 2',4",4'"-tri-O-acyltylosin and for the selective acylation of 2',4"-di-O-acyltylosin and 2',4",4'"-tri-O-acyltylosin are also disclosed.

Abstract: 12,13-Oxo derivatives of 16-membered macrolides such as tylosin and 23-O-demycinosyltylosin useful as antibacterials are disclosed.

Abstract: There are disclosed novel 23-demycinosyltylosin and derivatives thereof which have improved activity as antibiotics. Methods of preparation of the compounds are also disclosed.

Abstract: Novel 1-N-aminoalkyl (oxycarbonyl or carboxamido or thiocarboxamido) derivatives of 4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitols, useful as antibacterial agents, are described.

Abstract: The preparation of novel 2'-unsubstituted derivatives of 4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitols, useful as antibacterial agents, is described.

Abstract: This invention relates to the preparation of novel 1-epi-aminoglycosides, useful as antibacterial agents, and also relates to the process for the preparation of known as well as novel 1-N-substituted aminoglycoside antibacterial agents.

Abstract: This invention relates to the preparation of novel 1-desamino-1-oxo-aminoglycosides and their use as intermediates in the preparation of novel 1-desamino-1-hydroxy and 1-desamino-1-epi-hydroxyaminoglycoside antibacterial agents.

Abstract: 1,2'-di-N-4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitols and 1,6'-di-N-alkyl-4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitols and their acid addition salts are valuable as antibacterial agents. Also disclosed are 2'-N-alkyl-4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitol antibacterial agents which are also useful as intermediates in the preparation of the 1,2'-di-N-alkyl-4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitols. Preferred compounds of this invention include 1,2'-di-N-ethylsisomicin and 1,6'-di-N-ethylsisomicin.

Abstract: This disclosure relates to the preparation of garamine, its use as an antibacterial, and its use as an intermediate in the novel processes for preparing novel pseudotrisaccharides containing a garamine moiety, and to the use of the novel pseudotrisaccharides as antimicrobial, anthelmintic, antiprotozoal and antiviral agents.

Abstract: Aminoglycoside 66-40C, a minor product produced by the fermentation of Micromonospora inyoensis, is separated from said fermentation mixture, and is used as an intermediate in preparing the known antibiotic, sisomicin, as well as 6' -N-alkylsisomicins having antibacterial activity. Claimed are Aminoglycoside 66-40C as well as 6' -N-t-alkylsisomicins having a tertiary carbon bonded to the 6' -nitrogen.

Abstract: 1-N-Alkyl-Aminoglycoside-XK-88 derivatives, valuable as antibacterial agents, are prepared by the reaction of an acid addition salt of the corresponding 1-N-unsubstituted-Aminoglycoside-XK-88 antibacterial derivative or of a 2"-N-alkanoyl-Aminoglycoside-XK-88-5 derivative in an inert solvent, preferably a protic solvent containing water, with one equivalent of a hydride-donor reducing agent and with at least one equivalent of an aldehyde.The 2"-N-alkanoyl-Aminoglycoside-XK-88-5 intermediates are prepared by the reaction of a partially neutralized acid addition salt of Aminoglycoside-XK-88-5 with an acylating agent, and isolating the 2"-N-alkanoyl-Aminoglycoside-XK-88-5.