<PAGE>
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
_____________________
SCHEDULE 13G
(Rule 13d-102)
INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
DIATIDE, INC.
----------------------------
(Name of Issuer)
Common Stock
--------------------------------------
(Title of Class of Securities)
252842 10 9
-----------
(CUSIP Number)
<PAGE>
SCHEDULE 13G
CUSIP No. 252842 10 9 Page 2 of 7
-----------
____________________________________________________________________________
1. Name of Reporting Persons
S.S. or I.R.S. Identification Number of Above Persons
BURR, EGAN, DELEAGE & CO.
04-2681308
____________________________________________________________________________
2. Check the Appropriate Box if a Member of a Group - Not Applicable
____________________________________________________________________________
3. SEC Use Only
____________________________________________________________________________
4. Citizenship or Place of Organization
Massachusetts
____________________________________________________________________________
Number of Shares Beneficially Owned By Each Reporting Person With;
5. Sole Voting Power
N/A
____________________________________________________________________________
6. Shared Voting Power
49,089 Please also refer to Attachment A
<PAGE>
CUSIP No. 252842 10 9 Page 3 of 7
-----------
____________________________________________________________________________
7. Sole Dispositive Power
N/A
____________________________________________________________________________
8. Shared Dispositive Power
49,089 Please also refer to Attachment A
____________________________________________________________________________
9. Aggregate Amount Beneficially Owned by Each Reporting Person.
49,089 Please also refer to Attachment A
____________________________________________________________________________
10. Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares.
Not Applicable
____________________________________________________________________________
11. Percent of Class Represented by Amount in Row 9.
.5%
____________________________________________________________________________
12. Type of Reporting Person.
IA
____________________________________________________________________________
<PAGE>
CUSIP No. 252842 10 9 Page 4 of 7
-----------
SCHEDULE 13G
Item 1(a). Name of Issuer:
- ---------------------------
Diatide, Inc.
Item 1(b). Address of Issuer's Principal Executive Offices:
- ------------------------------------------------------------
9 Delta Drive
Londonderry, NH 03053
Item 2(a). Name of Person Filing:
- ----------------------------------
Burr, Egan, Deleage & Co.
Item 2(b). Address of
Principal Business Office or, if None, Residence:
- -------------------------------------------------
One Post Office Square
Suite 3800
Boston, MA 02109
Item 2(c). Citizenship:
- ------------------------
Massachusetts
Item 2(d). Title of Class of Securities:
- -----------------------------------------
Common Stock
Item 2(e). CUSIP Number:
- -------------------------
252842 10 9
<PAGE>
CUSIP No. 252842 10 9 Page 5 of 7
-----------
Item 3:
- -------
Not Applicable
Item 4. Ownership:
- -------------------
(a) Amount Beneficially Owned:
49,089
(b) Percent of Class:
.5%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
N/A
(ii) shared power to vote or to direct the vote:
49,089 Please also refer to Attachment A
(iii) sole power to dispose or to direct the
disposition of:
N/A
(iv) shared power to dispose or to direct the
disposition of:
49,089 Please also refer to Attachment A
<PAGE>
CUSIP No. 252842 10 9 Page 6 of 7
-----------
Item 5. Ownership of Five Percent or Less of a Class:
- ------------------------------------------------------
PLEASE REFER TO ATTACHMENT A
Item 6. Ownership of More Than Five Percent on Behalf of Another Person:
- -------------------------------------------------------------------------
Not Applicable
Item 7. Identification and Classification of the Subsidiary which Acquired the
Security Being Reported by the Parent Holding Company:
- -----------------------------------------------------------
Not Applicable
Item 8. Identification and Classification
of Members of the Group:
- --------------------------------------------
Not Applicable
Item 9. Notice of Dissolution of Group:
- ----------------------------------------
Not Applicable
Item 10. Certification:
- ------------------------
Not Applicable
<PAGE>
CUSIP No. 252842 10 9 Page 7 of 7
-----------
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.
February , 1998
----------------------------------
Date
Burr, Egan, Deleage & Co.
---------------------------------
/s/ Eileen McCarthy
---------------------------------
Eileen McCarthy
Vice-President
<PAGE>
ATTACHMENT A
DIATIDE, INC.
BURR, EGAN, DELEAGE & CO. DIRECTLY OR INDIRECTLY PROVIDES INVESTMENT ADVISORY
SERVICES TO VARIOUS VENTURE CAPITAL FUNDS, INCLUDING ALTA IV LIMITED PARTNERSHIP
AND C.V. SOFINNOVA PARTNERS FIVE. AT DECEMBER 31, 1997, THE BENEFICIAL
OWNERSHIP IS AS FOLLOWS:
COMMON
SHARES
-----------
ALTA IV LIMITED PARTNERSHIP 41,515
C.V. SOFINNOVA PARTNERS FIVE 7,574
------
TOTAL: 49,089 (1)
THE RESPECTIVE GENERAL PARTNERS OF THESE FUNDS EXERCISE SOLE VOTING AND
INVESTMENT POWER WITH RESPECT TO THE SHARES HELD BY SUCH FUNDS.
MR. JEAN DELEAGE, A DIRECTOR OF THE COMPANY, IS A GENERAL PARTNERS OF ALTA IV
MANAGEMENT PARTNERS, L.P. (THE GENERAL PARTNER OF ALTA IV LIMITED PARTNERSHIP).
AS A GENERAL PARTNER OF THE FUND, HE MAY BE DEEMED TO SHARE VOTING AND
INVESTMENT POWERS FOR THE SHARES HELD BY THE FUND. BURR, EGAN, DELEAGE & CO.
SERVES AS AN ADVISOR TO C.V. SOFINNOVA PARTNERS FIVE. THE PRINCIPALS OF BURR,
EGAN, DELEAGE & CO. DISCLAIM BENEFICIAL OWNERSHIP OF ALL SUCH SHARES HELD BY ALL
OF THE AFOREMENTIONED FUNDS EXCEPT TO THE EXTENT OF THEIR PROPORTIONATE
PECUNIARY INTERESTS THEREIN. MR. DELEAGE DISCLAIMS BENEFICIAL OWNERSHIP OF ALL
THE SHARES FOR THE ABOVE FUNDS EXCEPT TO THE EXTENT OF HIS PROPORTIONATE
PECUNIARY INTERESTS THEREIN.
MR. JEAN DELEAGE ALSO OWNS DIRECTOR'S STOCK OPTIONS FOR A TOTAL OF 7,500 SHARES
OF COMMON STOCK. HE ALSO BENEFICIALLY OWNS 23,236 SHARES OF COMMON STOCK AS A
RESULT OF A STOCK DISTRIBUTION FROM ALTA IV LIMITED PARTNERSHIP AND C.V.
SOFINNOVA PARTNERS FIVE TO THEIR RESPECTIVE GENERAL PARTNERS IN OCTOBER, 1997.
NOTES:
- ------
(1) TOTAL BENEFICIAL OWNERSHIP IS LESS THAN 5 PERCENT OF THE CLASS OF
SECURITIES OF THE COMPANY.
