Exhibit
10.11


ACKNOWLEDGEMENT
OF TERM COMMENCEMENT DATE

AND TERM EXPIRATION DATE


THIS ACKNOWLEDGEMENT OF COMMENCEMENT DATE AND TERM
EXPIRATION DATE is entered into as of May 7, 2007, with reference to that
certain Lease dated as of November 28, 2005, as amended by that certain
First Amendment to Lease dated as of October 25, 2006 (collectively, and
as the same may have been further amended, amended and restated, supplemented
or otherwise modified from time to time, the “Lease”),
by REDPOINT BIO CORPORATION, a Delaware corporation (“Tenant”),
as successor-in-interest to Linguagen Corporation, in favor of BMR-7 GRAPHICS
DRIVE LLC, a Delaware limited liability company (“Landlord”).
All capitalized terms used herein without definition shall have the meanings
ascribed to them in the Lease.


Tenant hereby
confirms the following:


1.             Tenant
accepted possession of the Premises on May 7, 2007.


2.             The
visible portions of the Premises are in good order, condition and repair except
as indicated on that certain punch list prepared by Architecture Plus dated
April 26, 2007, and that certain punchlist prepared by Becht Engineering
dated April 27, 2007.


3.             The
Tenant Improvements required to be constructed by Landlord under the Lease have
been substantially completed, except for items indicated on the punch list
referenced in Section 2 above.


4.             All
conditions of the Lease to be performed by Landlord as a condition to the full
effectiveness of the Lease have been satisfied; and Landlord has fulfilled all
of its duties in the nature of inducements offered to Tenant to lease the
Premises.


5.             In
accordance with the provisions of Section 4.2 of
the Lease, the Term Commencement Date is May 7, 2007, and, unless the
Lease is terminated prior to the Term Expiration Date pursuant to its terms,
the Lease Expiration Date shall be May 31, 2017.


6.             The
Lease is in full force and effect, and that the same represents the entire
agreement between Landlord and Tenant concerning the Premises.


7.             Tenant
has no existing defenses against the enforcement of the Lease by Landlord, and
there exist no offsets or credits against Rent owed or to be owed by Tenant.


8.             The
obligation to pay Rent is presently in effect and all Rent obligations on the
part of Tenant under the Lease commenced to accrue on May 7, 2007.


9.             The
undersigned Tenant has not made any prior assignment, transfer, hypothecation
or pledge of the Lease or of the rents thereunder or sublease of the Premises
or any portion thereof.











IN WITNESS WHEREOF, the parties hereto have executed
this Acknowledgment of Term Commencement Date and Term Expiration Date as of
May 7, 2007.




	
  BMR-7 GRAPHIC
  DRIVE LLC,

  a Delaware limited liability company

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
   

  	
  /s/ Gary A. Kreitzer

  	
   

  
	
  Name:

  	
   

  	
  Gary A. Kreitzer

  	
   

  
	
  Title:

  	
   

  	
  Executive V.P.

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  RED POINT BIO CORPORATION,

  a Delaware company

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
   

  	
  /s/ Scott Horvitz

  	
   

  
	
  Scott Horvitz

  	
   

  
	
  Chief Financial Officer