baber/WOPTO huggingface dataset:
Patent ES-2196951-A1 (ES)
Title: Recoverable shuttering
Inventor: UBINANA FELIX JOSE LUIS
IPC: E04G11/38
Filed: 2001-04-18
Abstract: The shuttering has shuttering panels (1,63,63',63'') provided with lateral flanges, adapted to be retained on retaining flanges (10,10',11,11') of the support beams (6,7,58) for supporting the panels (1), which beams bear on head parts (9,65,65',65'') displaceable vertically on the ends of upright legs (16,64,64',64'') adjustable between a high, shuttering position and a lower position for disassembly of the panels (1,63,63',63'') in which it is possible to raise the latter at one side, prior to their lateral translation, releasing one of the support beams (6,7,58) and allowing the panel (1,63,63',63'') to tilt so that it can be held suspended or can be removed.
Patent ES-2216663-A1 (ES)
Title: Dynamic rudder which is used to steer vessels
Inventor: BARCELO RICO-AVELLO GABRIEL
IPC: B63H25/52
Filed: 2002-01-25
Abstract: A dynamic rudder applicable for controlling ships, which consists of incorporating a cylinder on the lower part of the longitudinally situated keel or board, provided with two deposits on its ends, filled with water up to 50%, and which, by means of a pump, the water is moved from one to the other, having a horizontal shaft perpendicular to the longitudinal, shaft of the ship and parallel to the plane of the water.
Patent ES-2193873-A1 (ES)
Title: Detection of bacteria in a patient without symptoms consists of DNA contacting with a diana sequence amplification mixture
Inventor: MUNOZ RUIZ CARLOS
IPC: C12Q1/689
Filed: 2002-03-22
Abstract: The detection of bacteria in patient without symptoms comprises contacting of the DNA in a biological sample with a PCR reaction mixture. The reaction mixture comprises substances amplifying a diana sequence in the bacterial genome for determining the presence or absence of bacterial DNA circulating in the patient.
Patent ES-2204333-A1 (ES)
Title: Orthodontic bracket, has wire locating recess which can be closed using sliding part movable along guide
Inventor: CARRIERE LLUNCH LUIS
IPC: A61C7/28
Filed: 2002-10-10
Abstract: A sliding part (104) can be moved along a guide in the upper body in order to close the recess and fix the wire into position whilst remaining slidably connected to the part of the body containing the recess. Components are provided for holding the sliding part in the guide, so that stable open and closed positions for the recess are defined. - The bracket comprises a base (101) for fitting and fixing the bracket to a tooth in a removable manner, and an upper body protruding from the base and provided with a recess for locating wires.
Patent ES-2222085-A1 (ES)
Title: Vegetable based foodstuff incorporating meat and fish comprises a ground mixture also containing additives
Inventor: GUISASOLA GONITI MANUEL
IPC: A23L17/00
Filed: 2003-05-12
Abstract: The vegetable-based foodstuff incorporating meat and fish consists of an 80:20 mixture of the meat and fish, and the vegetable products. An industrial grinder is used to prepare the foodstuff, which also contains additives.
Patent ES-2246110-A1 (ES)
Title: System for positioning and transporting plate in formwork of reinforced concrete pillar, has stringers located in two opposed sides of base, and equispaced crosspieces located on stringers and fixed parallel to smaller axis of base
Inventor: NOGALES PERERA LUIS
IPC: B65D19/38
Filed: 2003-10-23
Abstract: The system has an inferior framework for supporting a plate. The inferior framework is formed by two extended lateral inferior crosspieces opposing a smaller axis of a base. Two stringers are located in two opposed sides of the base. Equispaced crosspieces are located on the stringers and fixed parallel to the smaller axis of the base.
Patent ES-2245206-A1 (ES)
Title: Gas valve with linear regulation for gas burners
Inventor: ALBIZURI LANDAZABAL INIGO
IPC: F16K5/16
Filed: 2003-12-17
Abstract: A gas valve with linear regulation for gas burners that comprises a valve body (10), said valve body (10) comprising a gas chamber (15), an inlet conduit (16) and an exit conduit (14) communicating with said gas chamber (15) a cone (13) housed inside said gas chamber (15) so that a lower part (22) of said gas chamber (15) remains empty and a rotating transmission shaft (17) via which said cone (13) rotates. The inlet conduit (16) is a diagonal channel communicating with the lower part (22) of the gas chamber (15), the lower chamber (21) of the cone (13) communicating with said lower part (22) of the gas chamber (15). The exit conduit (14) comprises a connection hole (1) communicating with the gas chamber (15).
Patent ES-2268922-A1 (ES)
Title: Two-stage hydraulic power unit has primary and secondary blocks, each including hydraulic system of pistons and cylinders, which receive power from crank of engine or other drive source and boost and transmit power to another crank
Inventor: QUINONES DE CIARAN FRANCISCO J
IPC: F03G7/10
Filed: 2004-02-02
Abstract: Primary and secondary blocks, each including a hydraulic system of pistons and cylinders, receive power from the crank of an engine or other drive source, and amplify and then transmit power to another crank. Furthermore, a lubricating oil pump in a case supplies lubricating oil to the movable parts of both blocks as well as the cylinders of the primary block. Valves open or close the lubricating oil passages leading to the cylinders.
Patent ES-2277509-A1 (ES)
Title: Independent reverse osmosis desalination units which are connected in terms of energy flow
Inventor: ALDAY ANSOLA JAVIER
IPC: B01D61/06
Filed: 2005-04-05
Abstract: The invention relates to independent reverse osmosis desalination units which are connected in terms of energy flow and which use the brine produced in each desalination unit in order to drive the feed flow to the following desalination unit through the use of energy recovery systems. The feed fluid is driven through a pump to the first desalination unit, such as to produce desalinated water and brine which is conveyed to the first energy recovery system, said system being equipped with a feed water inlet conduit and an outlet conduit for conveying the water that has been driven through the recovery system to the second desalination unit. Said second unit produces desalinated water and brine which is conveyed to the second energy recovery system in order to drive the feed water to a pump which raises the pressure to the same pressure as the first pump for feeding the first desalination unit.
Patent ES-2318924-A1 (ES)
Title: Orthodontic support with filament base has filament capillaries fixed to filament base, and cover detachably joined to filament base for protection and provided with cement mixing device having rotating piston rod with mixing spatula
Inventor: MARTINEZ ALBAL ELOY ANTONIO
IPC: A61C7/16
Filed: 2005-09-06
Abstract: The orthodontic support has a compound velvet-type filament base used in common with an orthodontic support structure. Filament capillaries are fixed to the base, such that the free ends of the filament capillaries are formed at uniform level. A cover in the form of a cap is detachably joined to the filament base to protect the base from non-hardened cement used in orthodontics. The cover also includes a cement-mixing device that has a digitally-driven rotating piston rod. A mixing spatula is attached to the end of the rotating piston rod.
Patent ES-2336996-A1 (ES)
Title: Silica and larnite powder aerogel composite material and use thereof in the storage and fixing of gases
Inventor: SANTOS SANCHEZ ALBERTO
IPC: B01D53/34
Filed: 2008-10-16
Abstract: A silica and larnite powder aerogel composite material is described, obtainable through mixing larnite powder (the surface whereof is chemically modified by an aminosilane) with a sol obtained through hydrolysis and polycondensation of a silane. Said material may be utilised in the storage and fixing of gases, particularly CO2.
Patent ES-2394664-A1 (ES)
Title: Method for operating a cooker, and control device for a cooker
Inventor: JORQUERA COCERA JOSE MANUEL
IPC: F24C7/08
Filed: 2010-09-30
Abstract: The invention relates to a method for operating a cooker (2) in the case of which operating cycles are controlled by a timer (8) of the cooker (2), wherein control takes place in dependence on a selected mode of operation of the cooker (2), wherein, following selection of the mode of operation, using the timer (8), a relay (10) is closed and, as a result, a heating unit and a cooking-chamber-illuminating means and at least one fan are switched on. The invention also relates to a control device for a cooker and to a corresponding cooker (2).
Patent HR-P20200645-A1 (HR)
Inventor: JELASKA DAMIR
IPC: B60L15/20
Filed: 2020-04-17
Abstract: Predložena je za patentiranje metoda kojom upravljački sustav hibridnog vozila može, za bilo koju promjenu brzine vozila, od konstantne početne na ciljanu, odrediti snagu kotača potrebnu za tu promjenu, kao i optimalne brzine vrtnje vratila pogonskog stroja za početnu i ciljanu brzinu vozila te za svaku brzinu između njih. Metoda se temelji na opažanju da se svaka vožnja vozila sastoji od niza pojedinačnih kraćih vožnji s konstantnim brzinama međusobno povezanih vožnjama s ubrzanjem – negativnim ili pozitivnim – te na činjenici da je sila otpora kotača pri konstantnoj brzini vozila neovisna o ubrzanju vozila; mijenja se samo s brzinom vozila. Stoga, za svaku konstantnu brzinu vozila postoji samo jedan okretni moment na kotačima, a za njega samo jedan okretni moment na vratilu pogonskog stroja. Sjecište linije svakog konstantnog okretnog momenta pogonskog stroja i linije (OOL) njegove maksimalne iskoristivosti u radnom dijagramu, određuje optimalnu brzinu vrtnje vratila za tu konstantnu brzinu vozila. Ubrzanje i snaga kotača pri povećanju brzine vozila od početne na ciljanu, određeni su visinom dodatnog okretnog momenta dodanog kotaču za ubrzanje vozila, a koji ovisi o okretnom momentom dodanom vratilu pogonskog stroja na početku ubrzanja. Dodatni moment pogonskog stroja se određuje po predloženom, unaprijed utvrđenom pravilu unesenom u upravljački sustav. Maksimalna vrijednost mu je ograničena vanjskom karakteristikom pogonskog stroja a minimalna razlikom okretnih momenata pri početnoj i ciljanoj konstantnoj brzini vozila. Radi veće iskoristivosti pogonskog stroja, u patentnoj aplikaciji se sugerira odabrati minimalnu vrijednost dodatnog okretnog momenta, tj. minimalno ubrzanje vozila. Pri tome, radne točke pogonskog stroja, ne samo za početnu i ciljanu brzinu vozila, nego i za svaku drugu brzinu između njih, leže na optimalnoj liniji (OOL) pogonskog stroja. Ubrzanje i za njega potrebna snaga kotača određeni su razlikom okretnih momenata u konstantnoj ciljanoj i konstantnoj početnoj brzini vozila. Upravljački sustav vozila, temeljem podataka dobivenih od niza senzora, opisanom metodom, bez ikakvog iteracijskog postupka, određuje optimalne brzine vrtnje pogonskog stroja i mehaničko stanje pogonskog sustava za početnu i ciljanu brzinu vozila te prisiljava pogonski stroj i elektromotor/generator da rotiraju svoja vratila potrebnim brzinama, da bi brzina vozila bila jednaka zahtijevanoj, a snaga kotača jednaka potrebnoj.
Patent SG-106655-A1 (SG)
Title: Thermistor and method of manufacture
Inventor: GREGG J LAVENUTA
IPC: H04N5/00
Filed: 2002-01-24
Abstract: A thermistor having multiple metal layers about at least a portion of a semiconductor body. The thermistor includes a first thick film electrode layer, a reactive metal layer, a barrier metal layer and, optionally, a layer to facilitate attachment to an electrical contact. Also, a method of making the thermistor is described. <IMAGE>
Patent SG-108917-A1 (SG)
Title: Oxidation and fatigue resistant metallic coating
Inventor: RUSSELL ALBERT BEERS
IPC: C23C30/00
Filed: 2003-04-25
Abstract: The present invention relates to a metallic coating to be deposited on gas turbine engine components. The metallic coating comprises up to 18 wt% cobalt, 3.0 to 18 wt% chromium, 5.0 to 15 wt% aluminum, 0.1 to 1.0 wt% yttrium, up to 0.6 wt% hafnium, up to 0.3 wt% silicon, 3.0 to 10 wt% tantalum, up to 9.0 wt% tungsten, 1.0 to 6.0 wt% rhenium, up to 10 wt% molybdenum, and the balance nickel.
Patent SG-124286-A1 (SG)
Title: Circular knitting machine with a working platform and construction kit for making same
Inventor: WEBER HELMUT
IPC: D04B9/00
Filed: 2004-06-05
Abstract: What is described is a circular knitting machine with a chassis (1) and means for manufacturing knitted goods. According to the invention, the circular knitting machine has at least one working platform (14) facilitating access to an upper region, and mounted on the outside of the chassis (1), said working platform being displaceably mounted on a guideway attached to the chassis (1) and running in its peripheral direction.
Patent TR-202005745-A1 (TR)
Title: Hava akiş yönünü kontrol etmeyi̇ sağlayan di̇füzör yapisi
Inventor: KAAN MUMCUOĞLU
IPC: B60H1/34
Filed: 2020-04-10
Abstract: Buluş, Daralan formda bir ana gövde (21) ve bahsedilen ana gövdenin (21) ucuna irtibatlı genişleyen formda bir dış gövde (23) içeren, konsol (10) üzerinde yer alan, araçların klima sistemlerinde hava çıkışını ve havanın yönlendirilmesini sağlayan bir difüzör (20) olup özelliği bahsedilen ana gövde (21) içerisinde sabit, daralan formda, bahsedilen ana gövdenin (21) genişliğinden daha küçük iç gövde (22), bahsedilen ana gövde (21) ile iç gövde (22) arasında kanal (200), bahsedilen kanal (200) ile iç gövde (22) dar kesitinin bulunduğu bölgede sürekli olarak konumlanmış yönlendirme açıklığı (201), bahsedilen dış gövdenin (23) ana gövde (21) içerisinde kalan bölümünde, bahsedilen dış gövdenin (23) ileri-geri hareketinin sınırlandırılmasını sağlayan tırnak (202), bahsedilen tırnak (202) bölgesinde özellikle yönlendirme açıklığından (201) hava geçişine olanak tanıyan girinti (203) içermesi ile karakterize edilmektedir.
Patent AR-027611-A1 (AR)
Title: 3-fenil-5-alcoxi-1,3,4-oxodiazol-2-onas substituidas, su produccion y empleo en substancias farmaceuticas
IPC: C07D413/10
Filed: 2001-03-05
Abstract: Se describen 3-fenil-5-alcoxi-1,3,4-oxodiazol-2-ona substituidos de la formula (1), en el que equivalen R1 a alquilo C1-6 u cicloalquilo C3-9 substituidos;R2, R3, R4 y R5 a hidrogeno, halogeno, nitro, alquilo C1-4, alquiloxi C1-9, arilo C6-10-alquilo xi C1-4 substituido, ariloxi C6-10, arilo C6-10, cicloalquiloC3-8 o O-cicloalquilo C3-8 o 2-oxo-pirrolidin-1-il, 2,5-dimetilpirrol-1-il o NR6-A-R7 con la condicion que R2, R3, R4 y R5 no sean hidrogenos simultáneamente yal menos uno de los radicales R2, R3, R4 y R5 sea igual al radical 2-oxo-pirrolidin-1-il, 2,5-dimetilpirrol-1-il o NR6-A-R7, con R6 = hidrogeno, alquilo C1-4 oarilo C6-10-alquilo C1-4 substituido, A = enlace simple, COn, SOn o CONH, donde n = 1 o 2; y R7 = hidrogeno, alquilo C1-1 8-alquenilo C2-18 substituido, ariloC6-10-alquilo C1-4, cicloalquilo C5-8-alquilo C1-4, cicloalquilo C5-8, arilo C6-10-alquenilo C2-6, arilo C6-10, difenilo, alquil C1-4-difenilo insanilo, o elgrupo Het-(CH2)r-, con r = 0, 1, 2 o 3 y Het = heterocicl o saturado o insaturado de 5-7 elementos, que puede tener un anillo bencénico condensado y puedesubstituirse, o pueda equivaler a un procedimiento para su produccion. Los compuestos presentan un efecto inhibidor en la lipasa sensible a hormonas, HSL.
Patent AR-028527-A1 (AR)
Title: Fluidos de perforacion y reparacion de pozos que contienen quitosana
Filed: 2001-03-29
Abstract: Se describe un proceso para la preparacion de fluidos seudoplásticos, de dilucion de corte que contienen quitosana, y un método para intensificar la estabilidad al calor de dichos fluidos. Los fluidos seudoplásticos utiles en los pozos de gas y/o petroleo, en particular los fluidos de excavacion, fluidos de perforacion, fluidos de proceso, fluidos de eliminacion de las tortas de los filtros, píldoras varias, y similares, se preparan por medio de la solubilizacion de la quitosana en una solucion ácida, y a partir de allí, se eleva el pH hasta más de 7,0 por medio de la adicion de un compuesto básico. La estabilidad al calor de dichos fluidos se intensifica por la incorporacion a los fluidos de ciertos azucares de aldosa o cetosa, oligosacáridos de dichos azucares, y sus mezclas, en forma opcional junto con un compuesto de bisulfito soluble en agua.
Patent AR-032460-A1 (AR)
Title: Una combinacion de stent y cateter balon
IPC: A61M25/00
Filed: 2001-06-13
Abstract: Un catéter con dos balones para la implantacion de un stent sin ensanchamiento de los extremos del stent durante el implante consta de un balon externo superpuesto a un balon interno. La longitud del balon interno es menor que la longitud del balon externo y menor que la del stent, que está montado sobre ambos balones. Al inflarse el balon interno, este balon interno expande solo la parte media del stent. Una vez expandida la parte media del stent, la aplicacion de mayor presion hace estallar el balon interno dando lugar a la aplicacion de presion al balon externo. Luego se infla el balon externo, expandiendo los extremos del stent.
Patent AR-028758-A1 (AR)
Title: Junta roscada tubular capaz de sufrir una expansion diametral
IPC: F16L15/04
Filed: 2001-06-26
Abstract: La junta roscada capaz de ser expandida comprende un labio (5) en el extremo del elemento macho (1) y un alojamiento para este labio en el elemento hembra (2). Para hacer que la junta roscada sea capaz de der estanca y de presentar una seccion de paso interior máxima después de haber sufrido una expansion diametral superior al 10%, la superficie de extremo libre macho (9) está empotrada antes de la expansion en una superficie parcialmente transversal de resalte (10) del alojamiento hembra gracias a la forma de encajaduras complementarias de estas superficies y la superficie periférica exterior (7) de labio macho (5) está dispuesta con poco juego desde la superficie periférica interior (8) del alojamiento hembra (6). Una junta roscada de este tipo es particularmente util para las columnas de tubos utilizadas en los pozos de hidrocarburos.
Patent AR-036160-A1 (AR)
Title: Regulacion de las vias metabolicas lipidicas en las plantas, mediante transgenesis con sentido o antisentido de factores de transcripcion hap2, hap5 y hap3/lec1
Inventor: ALLEN WILLIAM V
IPC: C12N15/82
Filed: 2002-06-28
Abstract: Preparación y uso de fragmentos de ácido nucleico que son de utilidad para alterar el fenotipo de aceites en plantas. Construcción de ADN recombinante que incorpora dichos fragmentos de ácido nucleico y secuencias reguladoras adecuadas para crear plantas transgénicas con perfiles de lípidos alterados. También se describen métodos para alterar el fenotipo de aceites en plantas usando dichos fragmentos de ácido nucleico. Dicho fragmento aislado de nucleótidos, comprende una secuencia de ácido nucleico seleccionada del grupo formado por: (a) una secuencia de ácido nucleico que codifica un quinto polipéptido que tiene actividad de factor de transcripción de tipo Hap2, donde dicho quinto polipéptido presenta por lo menos un 70% de identidad sobre la base del método de alineación de Clustal cuando se compara con un sexto polipéptido seleccionado del grupo formado por las SEQ ID N° 2, 4, 5, 6, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, o 208, 210, 212, 214, ó 216; (b) una secuencia de ácido nucleico que codifica un séptimo polipéptido que tiene actividad de factor de transcripción de tipo Hap5, donde dicho séptimo polipéptido presenta por lo menos un 80% de identidad sobre la base del método de alineación de Clustal cuando se compara con un octavo polipéptido seleccionado del grupo formado por las SEQ ID N° 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128 o 221; o (c) una secuencia de ácido nucleico que codifica un decimoséptimo polipéptido que tiene actividad tipo Hap3/Lec1, donde dicho decimoséptimo polipéptido presenta por lo menos un 70% de identidad sobre la base del método de alineación de Clustal cuando se compara con un decimoctavo polipéptido seleccionado del grupo formado por las SEQ ID N° 130, 132, 134 o 136.
Patent AR-037952-A1 (AR)
Title: Bacteria acido lactica para prevenir la infeccion con patogenos que expresan intimina
IPC: C12N1/11
Filed: 2002-12-19
Abstract: Bacteria ácido láctica para prevenir la infección con patógenos que expresan intimina. La presente pertenece a la bacteria láctica, exhibiendo una parte de la proteína intimina en su superficie. En particular, la presente se relaciona con el uso de tal bacteria láctida como un medio para vacunar individuos contra hemorragia entérica Escherichia coli (EPEC).
Patent AR-039923-A1 (AR)
Title: Dispositivo que prolonga la vida util de los diafragmas de los transductores electroacusticos de compresion, disminuyendo considerablemente las roturas ocasionadas por la fatiga que provoca la deformacion fragmentada
Inventor: ROJAS OMAR EDUARDO
Filed: 2003-05-30
Abstract: Dispositivo que prolonga la vida útil de los diafragmas de los transductores electroacústicos de compresión, disminuyendo considerablemente las roturas ocasionadas por la fatiga que provoca la deformación fragmentada, que incluye una estructura formada por una pieza central y una o más piezas anulares concéntricas de igual superficie que están separados entre sí por conductos o espacios de igual superficie transversal y que conforman de un lado un casquete esférico formado por anillos de igual superficie separadas con ranuras de igual superficie y del otro por una única abertura formada por los finales o salidas de dichos canales.
Patent AR-040971-A1 (AR)
Title: Compuestos pirimido que tienen actividad antiproliferativa
IPC: A61P35/00
Filed: 2003-08-12
Abstract: Se presentan compuestos que son inhibidores selectivos de ambas KDR y FGFR quinasas y son selectivas contra LCK. Estos compuestos y sus sales farmacéuticamente aceptables son agentes antiproliferativos útiles en el tratamiento o control de tumores sólidos, en particular tumores de mama, colon, pulmón y próstata. También se revelan composiciones farmacéuticas que contienen estos compuestos y un proceso para su preparación. Reivindicación 1: Un compuesto de fórmula (1) o sales farmacéuticamente aceptables del mismo, en donde R1 se selecciona del grupo, -H, -COR4, y -COOCHR5OCOR4; R2 y R3 se seleccionan independientemente de -H, y -OR5; R4 se selecciona del grupo -C1-6 alquilo; C1-6 alquilo sustituido por hasta 4 grupos seleccionados independientemente de -NR5R6, -SR5, -OR5, arilo, arilo sustituido por hasta 2 grupos seleccionados independientemente de -OR5 y C1-4 alquilo, y heteroarilo, y heterociclo; R5 y R6 se seleccionan independientemente de -H y C1-5 alquilo, o, alternativamente, -NR5R6 puede formar un anillo que tiene de 3 a 7 átomos, dicho anillo que incluye opcionalmente uno o más átomos de O o N adicionales.
Patent AR-042480-A1 (AR)
Title: Derivados de la quinazolina para el trtamiento del crecimiento celular anormal
IPC: C07D401/12
Filed: 2003-12-16
Abstract: La presente se refiere a procedimientos de tratamiento del crecimiento celular anormal en mamíferos mediante la administración de los compuestos de fórmula (1), y a composiciones farmacéuticas para tratar dichos trastornos que contienen los compuestos de fórmula (1), y a procedimientos de preparación. Reivindicación 1: Un compuesto caracterizado porque es de fórmula (1) o una sal, solvato o profármaco farmacéuticamente aceptable del mismo, en la que: R1 se selecciona del grupo constituido por H, y alquilo C1-6; R2 se selecciona del grupo constituido por H, grupos alquilo C1-10, alcoxi C1-6 e hidroxialquilo C1-6; R3 se selecciona del grupo constituido por H, alquilo C1-6, hidroxialquilo C1-6 y C(O)OR4, estando seleccionado R4 del grupo constituido por H y alquilo C1-6; R5 se selecciona del grupo constituido por -C(O)OH y -(CR6R7)m-NR1R8, en la que m es un número entero de 0 a 3; cada R6 y R7 está independientemente seleccionado del grupo constituido por H y alquilo C1-6, y en la que R8 se selecciona del grupo constituido por alquilo C1-6 y -C(O)-(CR6R7)m-O(alquilo C1-6); y en la que el compuesto de fórmula (1) está opcionalmente sustituido además con un hidroxi o un sustituyente ácido O-glucurónico.