-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 LmMPrT+Klo37fMT6PpJQ/1SOJZYJUvZT0RBf1otZeTebVpSICX8Z1zI5OcASvzkz
 5KAUXyk3IHhcg6buB41WHg==

<SEC-DOCUMENT>0001104659-08-059183.txt : 20080917
<SEC-HEADER>0001104659-08-059183.hdr.sgml : 20080917
<ACCEPTANCE-DATETIME>20080917122014
ACCESSION NUMBER:		0001104659-08-059183
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080915
FILED AS OF DATE:		20080917
DATE AS OF CHANGE:		20080917

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siegel Scott A.
		CENTRAL INDEX KEY:			0001413988

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51708
		FILM NUMBER:		081075677

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		609-637-9700

	MAIL ADDRESS:	
		STREET 1:		REDPOINT BIO CORPORATION
		STREET 2:		7 GRAPHICS DRIVE
		CITY:			EWING
		STATE:			NJ
		ZIP:			08628

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Redpoint Bio CORP
		CENTRAL INDEX KEY:			0001328003
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				203215854
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7 GRAPHICS DRIVE
		CITY:			EWING
		STATE:			NJ
		ZIP:			08628
		BUSINESS PHONE:		609 637-9700

	MAIL ADDRESS:	
		STREET 1:		7 GRAPHICS DRIVE
		CITY:			EWING
		STATE:			NJ
		ZIP:			08628

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Robcor Properties Inc
		DATE OF NAME CHANGE:	20050520
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-09-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001328003</issuerCik>
        <issuerName>Redpoint Bio CORP</issuerName>
        <issuerTradingSymbol>OTCBB:RPBC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001413988</rptOwnerCik>
            <rptOwnerName>Siegel Scott A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O REDPOINT BIO CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>7 GRAPHICS DRIVE</rptOwnerStreet2>
            <rptOwnerCity>EWING</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08628</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>V.P. - Corporate Development</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-09-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.34</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>Nancy DiAngelo is signing on behalf of Dr. Siegel pursuant to a power of attorney dated October 1, 2007.</remarks>

    <ownerSignature>
        <signatureName>/s/ Nancy DiAngelo as attorney-in-fact for Scott Siegel</signatureName>
        <signatureDate>2008-09-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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