(Adds Petrobras, Curro, Saudi Aramco, Beijing Soft Rock, Macom, Oracle, LSE, Sunoco, Cukurova, Marathon Petroleum, Opera Software; Updates Aixtron )
Nov 21 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 1500 GMT on Monday:
** Novartis NOVN.S is buying U.S.-based Selexys Pharmaceuticals in a deal worth up to $665 million, the Swiss drugmaker said, expanding its pipeline of medicines to combat blood diseases. Symantec Corp SYMC.O said it would acquire U.S. identity theft protection services company LifeLock Inc LOCK.N for $2.3 billion, in a deal that it hopes will prop up sales at its Norton cybersecurity unit. China's Anbang Insurance Group Co ANBANG.UL is in talks to buy as much as $2.3 billion in Japanese residential property assets from Blackstone (NYSE:BX) Group BX.N , two people involved in the discussions said, in what would be Japan's biggest property deal since the global financial crisis. Boral Ltd BLD.AX , Australia's biggest supplier of building materials, said it would buy Headwaters Inc HW.N for $1.8 billion in cash, doubling its U.S. presence at a time when President-elect Donald Trump plans a huge jump in infrastructure spending. South Africa's second-largest private hospital firm Netcare NTCJ.J will buy Akeso Clinics, a chain of psychiatric health facilities, for 1.3 billion rand ($91 million), the firm said. South Africa's biggest private education firm Curro Holdings COHJ.J , acquired a 50 percent stake in Botswana-based BA Isago University as part of its stated goal to run 80 campuses by 2020, the firm said on Monday. Brazil's state-controlled oil company Petroleo Brasileiro SA PETR4.SA said in a securities filing on Monday that an injunction in a civil lawsuit has forced the company to suspend the sale of stakes in the Baúna and Tartaruga Verde oil fields. Rowan Companies Plc RDC.N said it was forming a joint venture with Saudi Arabian state oil giant Saudi Aramco to operate offshore drilling rigs in the country. Concerns over China gaining access to the secrets of producing a little known material used in military equipment appear to be behind the U.S. block on a 670 million-euro ($713 million) Chinese bid for German chip equipment maker Aixtron AIXGn.DE . Beijing Soft Rock Investment Group 000609.SZ said on Monday it had scraped an asset-swap deal with Dalian Wanda Group, which is seeking a backdoor listing for its commercial property business in Shanghai. Analog chipmaker Macom Technology Solutions Holdings Inc MTSI.O said on Monday it would buy fellow chipmaker Applied Micro Circuits Corp AMCC.O for about $770 million to expand its data center connectivity business. Business software maker Oracle Corp (NYSE:ORCL) ORCL.N said on Monday it would buy Dyn, a monitor of global internet performance and traffic, to allow cloud customers to optimize their infrastructure costs and increase web-driven revenue. London Stock Exchange Group Plc (LSEG) LSE.L said on Monday that it would acquire business and financial information provider Mergent Inc. Sunoco Logistics Partners LP SXL.N said it would buy Energy Transfer Partners LP ETP.N in a deal valued at $19.93 billion to create the second-largest master limited partnership by enterprise value. Turkish holding company Cukurova did not declare an intent to buy a 13.22 percent stake in Turkcell TCELL.IS from Russia's Alfa Telecom by a Nov. 18 court deadline, a source close to the matter told Reuters. Hedge fund Elliott Management, which owns about 4 percent of Marathon Petroleum Corp (NYSE:MPC) MPC.N , urged the company to conduct a strategic review and consider splitting into three businesses. Norway's Opera Software OPERA.OL no longer plans to buy or sell companies and will instead stay focused on developing its mobile advertising units after the recent divestment of a key business, chief executive Lars Boilesen told Reuters on Monday.