# US 4,396,775 A · Homoserine aldehyde derivatives for mugineic acids synthesis

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- Number: US 4,396,775 A
- Document ID: US4396775A
- Status: Granted
- Kind: A
- Application number: 06/332,967
- Filed: 1981-12-21
- Granted: 1983-08-02
- Earliest claimed: 1980-12-29
- Assignees: Suntory Limited
- Inventors: Yasufumi Ohfune; Masako Tomita; Kyosuke Nomoto
- Web page: https://patentgrep.com/patent/US4396775A

## CPC

- C07D 405/12: linked by a chain containing hetero atoms as chain links
- C07D 205/04: having no double bonds between ring members or between ring members and non-ring members
- C07D 309/12: only hydrogen atoms and one oxygen atom directly attached to ring carbon atoms, e.g. tetrahydropyranyl ethers
- Y02P 20/55: Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

This invention is related to homoserine aldehyde derivatives represented by the formula (I) which is important intermediate for producing mugineic acid, 2'-deoxymugineic acid, avenic acid A and homologue. ##STR1##

## Claims

### Claim 1

Homoserine aldehyde derivatives represented by the formula (I) ##STR10## wherein R is hydrogen or hydroxy, R.sup.1 is selected from a group consisting of tetrahydropyranyl, methoxymethylene, methoxyethoxymethylene, 1-ethoxyethyl, t-butyl, dimethyl-t-butylsilyl, acetyl, trifluoroacetyl, triphenylmethyl or diphenylmethyl, R.sup.2 is selected from a group consisting of t-butoxycarbonyl, benzyloxycarbonyl, trifluoroacetyl or formyl and R.sup.3 is selected from a group consisting of benzyl, p-methoxybenzyl, methyl, ethyl, or diphenylmethyl.