The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 1976
Filed:
Feb. 24, 1975
George Y Lesher, Rensselaer, NY (US);
Karl O Gelotte, Nassau, NY (US);
Alexander R Surrey, Albany, NY (US);
Sterling Drug Inc., New York, NY (US);
Abstract
3-R-3-(Ac.sub.2 NH)-9-R'-9-(Ac.sub.1 NH)-1,5-dioxaspiro[5.5]undecane (I), where R and R' are each hydrogen or lower-alkyl, Ac.sub.1 is lower-alkanoyl or 4-Q.sub.1 -benzoyl and Ac.sub.2 is 4-Q.sub.2 -benzoyl where Q.sub.1 and Q.sub.2 each is lower-alkoxy or polyhalo-lower-alkoxy, are antifertility agents. The compounds are prepared by di-acylating 3-R-9-R'-1,5-dioxaspiro[5.5]undecan-3,9-diamine (II) or mono-acylating 9-(Ac.sub.1 NH)-3-R-9-R'-1,5-dioxaspiro[5.5]undecan-3-amine (IV). IV and II are prepared by oxidizing 4-(Ac.sub.1 NH)-4-R'-cyclohexanol (VI) to produce 4-(Ac.sub.1 NH)-4-R'-cyclohexanone (VII), reacting VII with 2-NO.sub.2 -2-R-1,3-propanediol to produce 3-R-3-NO.sub.2 -9-(Ac.sub.1 NH)-9-R'-1,5-dioxaspiro[5.5]undecane (VIII), reducing VIII to produce the corresponding 3-amine (IV) and hydrolyzing IV to the corresponding 3,9-diamine (II). Methods of preparing VI are shown.