Simulation and evaluation of chemical synthesis SECS

Simulation and Evaluation of Chemical Synthesis (SECS) was developed by Wipke and uses heuristic methods similar to LHASA but puts special emphasis on stereochemistry, topology, and energy minimization [112]. 

Wipke, W.T., Ouchi, G.I., and Krishnan, S., Simulation and Evaluation of Chemical Synthesis — SECS — Application of Artificial Intelligence Techniques, Artif. IntelL, 11, 173, 1978. 

For a synthesizer, we are reimplementing the Simulation and Evaluation of Chemical Synthesis (SECS) program on our IBM computer in collaboration with Professor Wipke, Once the program is running at Merck, we will instruct the chemists in program operation, and then ask them to code and test transforms. 

W. T. Wipke, G. I. Ouchi, and S. Krishnan, Artificial Intelligence, 11,173 (1978). Simulation and Evaluation of Chemical Synthesis, SECS. 

Plan Representation in SECS. The SECS Simulation and Evaluation of Chemical Synthesis program explicitly represents its plans(2) as a list structure of goal instructions with logical connectives. A goal instruction can specify one of the following ... 

Wipke, W. T. Braun, H. Smith, G. Choplin, F. Sieber, W. "SECS — Simulation and Evaluation of Chemical Synthesis Strategy and Planning American Chemical Society Vol. 61,... 

Wipke, W. T., Brown, H., Smith, G., Choplin, F., Seber, W. SECS-Simulation and evaluation of chemical synthesis strategy and planning , ACS 61, 1977... 

Corey EJ, Wipke WT, Cramer RD, Howe WJ (1972) Computer-assisted synthetic analysis. Facile man-machine communication of chemical structure by interactive computer graphics, J Am Chem Soc 94/2 421 Wipke WT, Braun H, Smith G, Choplin F, SieberW (1977) SECS — Simulation and evaluation of chemical synthesis Strategy and planning, in Computer-assisted organic synthesis, Wipke WT, Howe WJ ed, ACS Symposium Series, p 98... 

SECS—Simulation and Evaluation of Chemical Synthesis Strategy and Planning... 

The evolution of molecular graphics (7) is described in an earlier ACS Symposium Series book (77) which acts as an interesting precursor to this present volume. Chemical reaction systems such as LHASA (Logic and Heuristics Applied to Synthetic Analysis) 18) and SECS (Simulation and Evaluation of Chemical Synthesis) (79) had long used graphics but it was some time before the first in-house, proprietary system appeared, attracting much interest in the chemical and pharmaceutical industries. This was Upjohn s Compound Information System, COUSIN 20-21). 

The Standard Molecular Data (SMD) format is designed to provide such an integration tool on the basis of a file format. It has been developed in the course of the CASP project (Computer Assisted Synthesis Planning) which is run by a consortium of seven German and Swiss Chemical Companies (BASF, Bayer, Ciba-Geigy, Hoechst, E Merck, Hoffmann La Roche and Sandoz). The basis of this development was the Molfile format of the earlier SECS program (4) (Simulation and Evaluation of Chemical Synthesis). 

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