US 5,292,911 AGranted

Monocyclic terpene derivatives

AssigneeMitsubishi Kasei Corporation

InventorsHisao Takayanagi, Yasunori Kitano, Yasuhiro Morinaka

Life of this patent

Estimating the term…

Abstract

Novel monocyclic terpene derivative of the formula: ##STR1## wherein R is hydrogen atom, trimethylsilyl group or 1-ethoxyethyl group, and novel intermediates therefor. The terpene derivative (I) is a useful intermediate for preparing Sarcophytol A having an anti-carcinogenesis promoter activity and an antitumor activity.

Claims5

Dependent claims

A compound of the formula:

##STR20## wherein X is halogen or a group of the formula:
--OSO.sub.2 R.sup.1 wherein R.sup.1 is a C.sub.1-4 alkyl group which is unsubstituted or is substituted by a halogen atom or a phenyl group which is unsubstituted or is substituted by a C.sub.1-4 alkyl group, and Y is --CO.sub.3 Et, --CH.sub.2 OH, --CHO or ##STR21## wherein R is hydrogen, trimethylsilyl or 1-ethoxyethyl.

Dependencies are inferred from the claim text.

Facts

Application: 07/849,576Filed 10 Mar 1992 · division
Priority: JP 1-18170914 Jul 1989
Granted: 8 Mar 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

C07C 255/16
Having cyano groups bound to acyclic carbon atoms: containing cyano groups and singly-bound oxygen atoms bound to the same carbon atom of an…
C07C 33/423
Acyclic: containing only double bonds as unsaturation
C07C 45/298
Of hydroxy groups: with manganese derivatives
C07C 45/511
By pyrolysis, rearrangement or decomposition: involving transformation of singly bound oxygen functional groups to >C = O groups

Family

Serial555,999Parent of this division · filed 16 Jul 1990
US 5,118,827 AParent of this division
US 5,292,911 AThis patent

From the US filing history. Foreign family members aren’t listed.

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