There is provided a novel method of synthesizing certain tetracyclic quinones. In particular, there is provided a novel route to the synthesis of (.+-.)-7-deoxydaunomycinone and analogs thereof which includes the provision of novel tetrahydronaphthoquinones and tetracyclic quinone intermediates. The compounds of the present invention are provided through a route comprising a Diels-Alder addition of certain isobenzofurans to certain novel tetrahydronaphthoquinones. The products of the synthetic r...

A display article comprising a promotional route truck assembly which is made entirely of corrugated fiberboard materials. A uniquely engineered series of cuts and score lines permits the article to be shipped in a completely flat or knockdown position. Upon receipt by the retail merchant, consumer or collector, the device may be readily assembled into a highly durable and attractive unit. No separate fasteners or glue of any kind are required for assembly of the unit which may be easily complet...

A device for displaying information concerning the travel route of an automobile vehicle includes a calculation unit for continuously monitoring the changes in the travel direction of the vehicle on the basis of the direction detected by the direction detection unit, and successively storing change signals corresponding to the amount of change in the travel direction of the vehicle, when the amount of change in the vehicle direction exceeds a predetermined amount, and a distance signal correspon...

An electronic route translation system arranged to translate a first combination of 3, 4, or 6 numerical digits to a second predetermined combination of 3 numerical digits. The translator selectively reads segments of word information directly from memory into one output register without using additional adding, subtracting, shifting or masking functions. The read feature permits the same address in memory to be interrogated several times in a single translation with different segments of the sa...

An airplane route display system for presenting to the airplane passengers, over a television viewing monitor screen, a photographic display of a section of the route viewed by a television camera in the airplane, over which the airplane is being flown. An audio output from a pre-recorded tape describes the scene being viewed by the television camera, with the start of the audio equipment triggered by a remote signal transmitted or reflected from a ground marker serving to synchronize the audio ...

Method and apparatus for exchanging packets between networks using switches and without using routers for routing the packets to the destination. The method includes assembling a logically addressed packet for transmission on a network. Furthermore, the method includes determining whether an address map of a host assembling the logically addressed packet includes a physical address of a destination. Moreover, the method includes encapsulating the logically addressed packet in the physical addres...

A phosphorescent escape route indicator having at least one protruding indicia formed within or attached to a sheet of material. The protruding indicia has incorporated therewith a phosphorescent substance capable of emitting a glow in the absence of light. An adhesive formed as part of the sheet is utilized to apply the indicator to the surface of walls or stairways thereby aiding in delineating escape routes or access routes to emergency equipment during time of emergency.

A route mapping device comprising a transluscent map and a plurality of first light conducting fibers, the ends of which are disposed at points behind said map corresponding to locations of customers to whom deliveries may be made. Switching circuitry which includes a plurality of switches is provided for selectively directing light into each of said first light conducting fibers. A plurality of second light conducting fibers, each with one end adjacent the end of one of said first light conduct...

An improved procedure for forming F.sub.1 hybrid soybean plants (i.e., hybrid soybean plants of the first filial generation) is provided which is capable of being readily implemented on a commercial scale. Unlike processes proposed in the prior art the requisite cross-pollination needed to produce the F.sub.1 hybrid having hybrid vigor is precisely controlled. The seed parent upon which seeds capable of forming F.sub.1 hybrid plants are produced is fully male sterile (as described herein) thereb...

The novel compound .alpha.-bromodiethylcarbonate, its use in the preparation of 1-ethoxycarbonyloxyethyl esters of penicillins and cephalosporins, in particular bacampicillin, and improvements in the method for preparing such esters.