GR24146B - METHOD FOR THE PREPARATION OF UNKNOWN UNTIL JUDGMENTS, SIMILAR TO RESERPIN. - Google Patents

METHOD FOR THE PREPARATION OF UNKNOWN UNTIL JUDGMENTS, SIMILAR TO RESERPIN.

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Publication number
GR24146B
GR24146B GR590124146A GR590124146A GR24146B GR 24146 B GR24146 B GR 24146B GR 590124146 A GR590124146 A GR 590124146A GR 590124146 A GR590124146 A GR 590124146A GR 24146 B GR24146 B GR 24146B
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GR
Greece
Prior art keywords
formula
lactone
acid
known methods
lactam
Prior art date
Application number
GR590124146A
Other languages
Greek (el)
Original Assignee
Sandoz A.G.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandoz A.G. filed Critical Sandoz A.G.
Priority to GR590124146A priority Critical patent/GR24146B/en
Publication of GR24146B publication Critical patent/GR24146B/en

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

έθοδος δια την παρασκευήν αγνώστων μέχρι τούδε, ομοίων προς ρεζερπίνην ενώσεων του γενικού τύπου Ι: [*] εις τον οποίον τα R1 και R3 δηλούν κατωτέραν αλκυλικάς ομάδας, το R2 δηλοί μίαν κατωτέραν αλκοξυ-ομάδα, και το R4 δηλοί εν ακετυλικόν, πιβαλοϋλικόν, 3,4,5-τριμεθθξυβενζοϋλικόν ή καρβαιθοξυ-συριγγοϋλικόν υπόλοιπον, διακρινομένη εκ τούτου, ότι μίαν βρωμοκετόνην του τύπου ΙΙ: [*] εις τον οποίον τοR1 έχει την ανωτέρω δοθείσαν σημασίαν, υποβάλλομεν εις την επίδρασιν κόνεως ψευδαργύρου παρουσία οξεικού ανυδρίτου, επί του παραραχθέντος δικυκλικού,ακορέστου κετοξέος, του τύπου ΙΙΙ: [*] ενδεχομένως μετά διαχωρισμόν εις τους ενιαίους οπτικούς αντίποδας επί τη βάσει γνωστών μεθόδων, αφήνομεν να επιδράση υπεριωδικόν οξύ ή υπεριωδικόν νάτριον, παρουσία καταλυτικών ποσοτήτων τετραξειδίου του οσμίου, το σχηματισθέν διακαρβονικόν οξύ της αλδεϋδης εστεροποιούμεν, τον διεστέρα συμπυκνούμεν με μίαν υποκατεστημένην τριπταμίνην του γενικού τύπου ΙV: [*] εις τον οποίον οι υποκαταστάται R2 και R3 έχουν την ανωτέρω δοθείσαν σημασίαν, την παραχθείσαν βάσιν του Schiff ανάγομεν και σαπωνοποιούμεν, οπότε παράγεται μία τετρακυκλική λακτάμη του τύπου V: [*] εις τον οποίον οι υποκαταστάται R1, R2 και R3 έχουν την ανωτερω δοθείσαν σημασίαν, την λακτάμην V λακτονοποιούμενκατά γνωστάς μεθόδους, την σχηματισθείσαν λακτάμην της λακτόνης του τύπου VI: [*] μετατρέπομεν εις κυκλικήν ένωσιν δι' οξυχλωριούχου φωσφόρου και ακολούθως κατεργαζόμεθα δια διαλύματος αμμωνίας, την ληφθείσαν 3-δεϋδρολακτόνην του τύπου VII: [*] ανάγομεν, οπότε παράγεται μία υποκατεστημένη λακτόνη του ισοδεζερπιδικού οξέος, του τύπου VIII: [*] την λακτόνην VIII αναδιατάσσομεν κατά γνωστάς μεθόδους εις την αντίστοιχον υποκατεστημένην λακτόνην του δεζερπιδικού οξέος, του τύπου ΙΧ: [*] την λακτόνην ΙΧ μετατρέπομεν δια μεθανολύσεως ειςένα υποκατεστημένον μεθαλεστέρα ενός δεζερκιδικούοξέος και τον σχηματισθέντα υδροξυ-εστέρα, δια εστεροποιήσεως με εν ικανόν προς αντίδρασιν παράγωγον του οξεικού, πιβαλινικού, 3,4,Method for the preparation of hitherto unknown, reserpine-like compounds of general formula I: [*] wherein R1 and R3 denote a lower alkyl group, R2 denotes a lower alkoxy group, and R4 denote an acetyl, pivaloyl, 3,4,5-trimethoxybenzoyl or carbathoxy-syringoyl moiety of the distinct, distinct of type II: [*] in which R1 has the above significance, subjected to the effect of zinc powder in the presence of acetic anhydride on the produced bicyclic, unsaturated ketoacid of formula III: [*] possibly after separation into the single optical antipodes based on known methods, allowed to be effected by ultraviolet acid or sodium ultraviolet, in the presence of catalytic amounts of osmium tetraxide, the formed bicarbonate of the aldehyde [*] in which the substituents R2 and R3 have the meaning given above, the Schiff-based product is reduced and saponified to give a tetracyclic lactam of formula V: [*] in which substituents R1, R2 and R3 have the above meaning, lactam V lactonated by known methods, formed lactam of the lactone of formula VI: [*] converted to a cyclic compound with phosphorus oxychloride and then treated with ammonia solution to obtain the 3-dehydrolactone of formula VII: [*] to form a substituted isodesarpidic acid lactone of formula VIII: [*] The lactone VIII is redistributed by known methods to the corresponding substituted deserpidic acid lactone of formula IX: [*] the lactone IX was converted by methanolysis to a substituted methyl ester of a desercidic acid and the formed hydroxy ester, by esterification with a reactive derivative of the acetate, pivaline, 3,4,

GR590124146A 1959-09-19 1959-09-19 METHOD FOR THE PREPARATION OF UNKNOWN UNTIL JUDGMENTS, SIMILAR TO RESERPIN. GR24146B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR590124146A GR24146B (en) 1959-09-19 1959-09-19 METHOD FOR THE PREPARATION OF UNKNOWN UNTIL JUDGMENTS, SIMILAR TO RESERPIN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR590124146A GR24146B (en) 1959-09-19 1959-09-19 METHOD FOR THE PREPARATION OF UNKNOWN UNTIL JUDGMENTS, SIMILAR TO RESERPIN.

Publications (1)

Publication Number Publication Date
GR24146B true GR24146B (en) 1963-01-16

Family

ID=36864805

Family Applications (1)

Application Number Title Priority Date Filing Date
GR590124146A GR24146B (en) 1959-09-19 1959-09-19 METHOD FOR THE PREPARATION OF UNKNOWN UNTIL JUDGMENTS, SIMILAR TO RESERPIN.

Country Status (1)

Country Link
GR (1) GR24146B (en)

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