Document:

Exhibit
      10.23

    

    FLAGSHIP
      GLOBAL HEALTH, INC.

    

    Warrant
      To Purchase Common Stock

    (Amendment
      No. 1)

    

    This
      amendment (the “Amendment”),
      dated
      as of September 6, 2007 (the “Effective
      Date”)
      to
      those certain Common Stock Purchase Warrants (the “Warrants”),
      issued on July 16, 2007 by Flagship Global Health, Inc., a Delaware corporation,
      (the “Company”)
      to
      each of FrontPoint Healthcare Fund, L.P., FrontPoint Healthcare Fund 2X, L.P.,
      FrontPoint Healthcare Horizons Fund, L.P. and FrontPoint Healthcare Long
      Horizons Fund, L.P. (collectively, “FrontPoint”).

    

    All
      capitalized terms not otherwise defined herein shall have the meanings given
      to
      them in the Warrants, as applicable.

    

    BACKGROUND

    

    The
      Company and FrontPoint are parties to that certain Securities Purchase
      Agreement, dated as of July 16, 2007 (the "Securities
      Purchase Agreement"),
      pursuant to which, among other things, FrontPoint purchased from the Company
      and
      the Company issued to FrontPoint, (i) shares of the Common Stock, par value
      $0.001 per share, of the Company (the "Common
      Stock")
      and
      (ii) Warrants which are exercisable into an aggregate of 2,042,777 fully paid
      nonassessable shares of the Company’s Common Stock. The Company has requested
      that FrontPoint modify the date of exercise and expiration for the Warrants,
      and
      FrontPoint is willing to do so on the terms and conditions hereinafter set
      forth.

    

    NOW,
      THEREFORE, for good and valuable consideration, the receipt and sufficiency
      of
      which are hereby acknowledged, and intending to be legally bound, the parties
      agree as follows:

    

    1. Amendment
      to Warrant.
      As of
      the Effective Date, the first sentence of Section 1(a) and the entire Section
      15(j) of the Warrants are hereby amended to provide as follows:

    

    1.  EXERCISE
      OF WARRANT.

     

    (a) Mechanics
      of Exercise.
      Subject
      to the terms and conditions hereof (including, without limitation, the
      limitations set forth in Section 1(f)), this Warrant may only be exercised
      by
      the Holder beginning one (1) year from the Issuance Date, in whole or in part,
      by (i) delivery of a written notice, in the form attached hereto as
Exhibit
      A
      (the
      "Exercise
      Notice"),
      of
      the Holder's election to exercise this Warrant and (ii) (A) payment to the
      Company of an amount equal to the applicable Exercise Price multiplied by the
      number of Warrant Shares as to which this Warrant is being exercised (the
      "Aggregate
      Exercise Price")
      in
      cash or by wire transfer of immediately available funds or (B) by notifying
      the
      Company that this Warrant is being exercised pursuant to a Cashless Exercise
      (as
      defined in Section 1(d)). 

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    15. CERTAIN
      DEFINITIONS.
      

     

    (j)
      "Expiration
      Date"
      means
      the date forty-eight (48) months after the Issuance Date or, if such date falls
      on a day other than a Business Day or on which trading does not take place
      on
      the Principal Market (a "Holiday"),
      the
      next date that is not a Holiday.

     

    2. Effect
      on the Warrants.
      Except
      as specifically amended herein, the Warrants shall remain in full force and
      effect in accordance with their terms, and are hereby ratified and
      confirmed.

    

    3. Disclosure.
      The
      Company shall file a Current Report on Form 8-K within four (4) Business Days
      following the Effective Date describing the terms of this Amendment and
      attaching a copy of the form of this Amendment.

    

    4. Governing
      Law.
      This
      Amendment shall be governed by and construed and enforced in accordance with,
      and all questions concerning the construction, validity, interpretation and
      performance of this Amendment shall be governed by, the internal laws of the
      State of New York, without giving effect to any choice of law or conflict of
      law
      provision or rule (whether of the State of New York or any other jurisdictions)
      that would cause the application of the laws of any jurisdictions other than
      the
      State of New York.

    

    5. Headings.
      The
      headings of this Amendment are for convenience of reference and shall not form
      part of, or affect the interpretation of, this Amendment.

    

    6. Counterparts;
      Facsimile.
      This
      Amendment may be executed in two or more identical counterparts, all of which
      shall be considered one and the same agreement and shall become effective when
      counterparts have been signed by each party and delivered to the other party;
      provided that a facsimile signature shall be considered due execution and shall
      be binding upon the signatory thereto with the same force and effect as if
      the
      signature were an original, not a facsimile signature.

    

    [Signature
      Page Follows]

     

    
      
         

      

      
         

        
          

        

      

      
         

      

       

    

    IN
      WITNESS WHEREOF,
      this
      Amendment has been duly executed as of the date first written
      above.

    

    
      	 	 	 
	 	
              FLAGSHIP
                GLOBAL HEALTH, INC.

            
	 
 	 
 	 
 
	
            	By:  	/s/
              Fred
              F. Nazem 
	 	
              

              Name: Fred
                F. Nazem

            
	 	
              Title: Chief
                Executive Officer

            

      	 	 	 
	 	
              FRONTPOINT
                HEALTHCARE FUND, L.P.

            
	 
 	 
 	 
 
	
            	By:  	/s/
              T.A.
              McKinney
	 	
              

              Name:
                T.A. McKinney

            
	 	
              Title:
                Authorized Signatory

            

      	 	 	 
	 	
              FRONTPOINT
                HEALTHCARE FUND 2X, L.P.

            
	 
 	 
 	 
 
	
            	By:  	/s/
              T.A.
              McKinney
	 	
              

              Name:
                T.A. McKinney

            
	 	
              Title:
                Authorized Signatory

            

      	 	 	 
	 	
              FRONTPOINT
                HEALTHCARE HORIZONS FUND, L.P.

            
	 
 	 
 	 
 
	
            	By:  	/s/
              T.A.
              McKinney
	 	
              

              Name:
                T.A. McKinney

            
	 	
              Title:
                Authorized Signatory

            

      	 	 	 
	 	
              FRONTPOINT
                HEALTHCARE LONG HORIZONS FUND,
                L.P.

            
	 
 	 
 	 
 
	
            	By:  	/s/
              T.A.
              McKinney
	 	
              

              Name:
                T.A. McKinney

            
	 	
              Title:
                Authorized SignatoryAMENDMENT
      NO. 1 TO THE

    SHARE
      EXCHANGE AGREEMENT

     

    This
      Amendment No. 1 to the SHARE
      EXCHANGE AGREEMENT
      (the
“Agreement”),
      dated
      of even date herewith by and among OJSE
      SMOLENERGY,
      a
      corporation formed under the laws of the Russian Federation (the
      “Company”),
      Viktor Ekimov, a citizen of the Russian Federation, (“Gorstovoe
      Holder”) and RUSSOIL
      CORPORATION,
      a
      Nevada corporation (“Russoil”),
      filing reports pursuant to the Securities Exchange Act of 1934, as amended
      (the
“Exchange
      Act”)
      and the
      stockholders of the Company signatory hereto (the “Stockholders”).
      Each
      of the parties to this Agreement is individually referred to herein as a
“Party”
and
      collectively, as the “Parties.”

     

    BACKGROUND

    

    WHEREAS,
      the
      above Parties have entered into the Share Exchange Agreement.

    

    WHEREAS,
      the
      Agreement misidentified the Gorstovoe Holder in two respects;

    

    WHEREAS,
      the
      Parties desire to amend certain of the terms of the Agreement.

    

    Now,
      therefore, the Agreement is amended as follows:

     

    
      	 	
              A.

            	
              The
                preamble to the Agreement is amended to read as
                follow:

            

    

    

    SHARE
      EXCHANGE AGREEMENT

    

    This
      SHARE
      EXCHANGE AGREEMENT (the
      “Agreement”),
      dated
      as of August 31, 2007, is by and among OJSE
      SMOLENERGY,
      a
      corporation formed under the laws of the Russian Federation (the “Company”),
      Viktor Ekimov, a citizen of the Russian Federation (“V.
      Ekimov”),
      and
      the Closed Joint Stock Company ZAO Ariust (“ARIUST”)
      (collectively, V. Ekimov and Ariust are hereinafter referred to as the
“Gorstovoe
      Holder”)
      and
RUSSOIL
      CORPORATION, a
      Nevada
      corporation (“Russoil”),
      filing reports pursuant to the Securities Exchange Act of 1934, as amended
      (the
Exchange
      Act”)
      and
      the stockholders of the Company signatory hereto (the “Stockholders”).
      Each
      of the parties to this Agreement is individually referred to herein as a
“Party”
and
      collectively, as the “Parties”.

    

    
      	 	
              B.

            	
              Ariust
                shall become a party to the
                Agreement.

            

    

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    
      	 	
              C.

            	
              This
                Amendment shall become effective as of the date first above
                written.

            

    

    

    
      	 	
              D.

            	
              This
                Amendment shall be binding upon and inure to the benefit of the Parties
                hereto and their respective heirs, successors and
                assigns.

            

    

    

    
      	 	
              E.

            	
              On
                and after the date, execution and delivery hereof, (i) this Amendment
                shall be part of the Agreement; (ii) each reference in the Agreement
                to
                “this Agreement”, “hereof”, “hereunder” or words of like import, and each
                reference in any other document to the Agreement shall mean and be
                a
                reference to the Agreement as amended or modified
                hereby.

            

    

     

    
      	
            	F.	
              Counterparts;
                Facsimile Execution.
                This Amendment may be executed in
                one or more counterparts, all of which shall be considered one and
                the
                same agreement and shall become effective when one or more counterparts
                have been signed by each of the Parties and delivered to the other
                Parties. Facsimile execution and delivery of this Agreement is legal,
                valid and binding for all
                purposes.

            

    

     

     

    
      	
            	G.	
              Governing
                Law.
                This Amendment shall be governed by, and construed in accordance
                with, the
                laws of the State of New York, regardless of the laws that might
                otherwise
                govern under applicable principles of conflicts of laws thereof,
                except to
                the extent the laws of Nevada are mandatorily applicable to the
                Transactions.

            

    

    

    The
      Parties hereto have executed and delivered this Share Exchange Agreement as
      of
      the date first above written.

    
      	 	 	 
	 	
              RUSSOIL
                CORPORATION

            
	 
 	 
 	 
 
	
            	By:  	
              /s/
                Silvestre Hutchinson

            
	 	
              

              Name: Silvestre
                Hutchinson

            
	 	Title:
              President

    

     

    
      	 	 	 
	 	
              
                OJSE
                  SMOLENERGY

              

            
	 
 	 
 	 
 
	
            	By:  	
              
                /s/
                  Evgeny Bagay

              

            
	 	
              

              Name: Evgeny
                Bagay 

            
	 	Title:
              Deputy
              of the General
              Director

    

     

    
      
         

      

      
        2

        
          

        

      

      
         

      

    

     

    
      	 	 	 
	 	
              
                THE
                  STOCKHOLDERS:

              

            
	 
 	 
 	 
 
	
            	
            	
              
                
                  /s/
                    Elias Kamennoy

                

              

            
	 	
              

              
                Elias
                  Kamennoy

              

            
	 	
              Number
                of shares the Company owned: 500

            

    

     

    
      	 	 	 
	
            	
            	
              
                
                  
                    /s/
                      Evgeny
                      Bagay

                  

                

              

            
	 	
              

              
                
                  Evgeny
                    Bagay 

                  Number
                    of shares the Company owned:
                    2,500

                

              

            

    

     

    
      	 	 	 
	
            	
            	
              
                
                  
                    
                      /s/
                        Evgeny
                        Fedosov

                    

                  

                

              

            
	 	
              

              
                
                  
                    Evgeny
                      Fedosov 

                    Number
                      of shares the Company owned: 7,000

                  

                

              

            

    

     

    
      	 	 	 
	 	
              
                
                  THE
                    GORSTOVOE
                    HOLDER

                

              

            
	 
 	 
 	 
 
	
            	
            	
              
                
                  
                    /s/
                      Viktor
                      Ekimov

                  

                

              

            
	 	
              

              
                
                  Viktor
                    Ekimov

                

              

            

    

     

    
      	 	 	 
	 	
              
                
                  ZAO
                    ARIUST

                

              

            
	 
 	 
 	 
 
	
            	By:  	
              
                
                  
                    /s/
                      Viktor Ekimov 

                  

                

              

            
	 	
              

              
                
                  Viktor
                    Ekimov

                

              

            
	 	Title: 

    

     

    
      
         

      

      
        3

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